{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2023-52564", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-03-02T21:55:42.567Z", "datePublished": "2024-03-02T21:59:36.867Z", "dateUpdated": "2024-11-04T14:48:49.186Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-11-04T14:48:49.186Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRevert \"tty: n_gsm: fix UAF in gsm_cleanup_mux\"\n\nThis reverts commit 9b9c8195f3f0d74a826077fc1c01b9ee74907239.\n\nThe commit above is reverted as it did not solve the original issue.\n\ngsm_cleanup_mux() tries to free up the virtual ttys by calling\ngsm_dlci_release() for each available DLCI. There, dlci_put() is called to\ndecrease the reference counter for the DLCI via tty_port_put() which\nfinally calls gsm_dlci_free(). This already clears the pointer which is\nbeing checked in gsm_cleanup_mux() before calling gsm_dlci_release().\nTherefore, it is not necessary to clear this pointer in gsm_cleanup_mux()\nas done in the reverted commit. The commit introduces a null pointer\ndereference:\n <TASK>\n ? __die+0x1f/0x70\n ? page_fault_oops+0x156/0x420\n ? search_exception_tables+0x37/0x50\n ? fixup_exception+0x21/0x310\n ? exc_page_fault+0x69/0x150\n ? asm_exc_page_fault+0x26/0x30\n ? tty_port_put+0x19/0xa0\n gsmtty_cleanup+0x29/0x80 [n_gsm]\n release_one_tty+0x37/0xe0\n process_one_work+0x1e6/0x3e0\n worker_thread+0x4c/0x3d0\n ? __pfx_worker_thread+0x10/0x10\n kthread+0xe1/0x110\n ? __pfx_kthread+0x10/0x10\n ret_from_fork+0x2f/0x50\n ? __pfx_kthread+0x10/0x10\n ret_from_fork_asm+0x1b/0x30\n </TASK>\n\nThe actual issue is that nothing guards dlci_put() from being called\nmultiple times while the tty driver was triggered but did not yet finished\ncalling gsm_dlci_free()."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/tty/n_gsm.c"], "versions": [{"version": "8fc0eabaa73b", "lessThan": "6d5c8862932d", "status": "affected", "versionType": "git"}, {"version": "5138c228311a", "lessThan": "a48d2bcd23f2", "status": "affected", "versionType": "git"}, {"version": "9615ca54bc13", "lessThan": "c61d0b87a702", "status": "affected", "versionType": "git"}, {"version": "9b9c8195f3f0", "lessThan": "2bff660e0ff3", "status": "affected", "versionType": "git"}, {"version": "9b9c8195f3f0", "lessThan": "29346e217b8a", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/tty/n_gsm.c"], "versions": [{"version": "6.5", "status": "affected"}, {"version": "0", "lessThan": "6.5", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.198", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.134", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.56", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.5.6", "lessThanOrEqual": "6.5.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "references": [{"url": "https://git.kernel.org/stable/c/6d5c8862932d31a810b6545f7d69ecc124402c6e"}, {"url": "https://git.kernel.org/stable/c/a48d2bcd23f2c98d575bc2f9b7a3fbd16aeea9eb"}, {"url": "https://git.kernel.org/stable/c/c61d0b87a7028c2c10faffc524d748334c7b9827"}, {"url": "https://git.kernel.org/stable/c/2bff660e0ff349dee84dc4f6f6d10da4497f5b28"}, {"url": "https://git.kernel.org/stable/c/29346e217b8ab8a52889b88f00b268278d6b7668"}], "title": "Revert \"tty: n_gsm: fix UAF in gsm_cleanup_mux\"", "x_generator": {"engine": "bippy-9e1c9544281a"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2023-52564", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-03-07T20:09:41.921733Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-07-05T17:21:06.965Z"}}, {"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T23:03:20.987Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/6d5c8862932d31a810b6545f7d69ecc124402c6e", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/a48d2bcd23f2c98d575bc2f9b7a3fbd16aeea9eb", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/c61d0b87a7028c2c10faffc524d748334c7b9827", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/2bff660e0ff349dee84dc4f6f6d10da4497f5b28", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/29346e217b8ab8a52889b88f00b268278d6b7668", "tags": ["x_transferred"]}]}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/6d5c8862932d31a810b6545f7d69ecc124402c6e", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/a48d2bcd23f2c98d575bc2f9b7a3fbd16aeea9eb", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/c61d0b87a7028c2c10faffc524d748334c7b9827", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/2bff660e0ff349dee84dc4f6f6d10da4497f5b28", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/29346e217b8ab8a52889b88f00b268278d6b7668", "tags": ["x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T23:03:20.987Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2023-52564", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-03-07T20:09:41.921733Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-07-05T15:20:37.900Z"}}], "cna": {"title": "Revert \"tty: n_gsm: fix UAF in gsm_cleanup_mux\"", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "8fc0eabaa73b", "lessThan": "6d5c8862932d", "versionType": "git"}, {"status": "affected", "version": "5138c228311a", "lessThan": "a48d2bcd23f2", "versionType": "git"}, {"status": "affected", "version": "9615ca54bc13", "lessThan": "c61d0b87a702", "versionType": "git"}, {"status": "affected", "version": "9b9c8195f3f0", "lessThan": "2bff660e0ff3", "versionType": "git"}, {"status": "affected", "version": "9b9c8195f3f0", "lessThan": "29346e217b8a", "versionType": "git"}], "programFiles": ["drivers/tty/n_gsm.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.5"}, {"status": "unaffected", "version": "0", "lessThan": "6.5", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.198", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.134", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.56", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.5.6", "versionType": "semver", "lessThanOrEqual": "6.5.*"}, {"status": "unaffected", "version": "6.6", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/tty/n_gsm.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/6d5c8862932d31a810b6545f7d69ecc124402c6e"}, {"url": "https://git.kernel.org/stable/c/a48d2bcd23f2c98d575bc2f9b7a3fbd16aeea9eb"}, {"url": "https://git.kernel.org/stable/c/c61d0b87a7028c2c10faffc524d748334c7b9827"}, {"url": "https://git.kernel.org/stable/c/2bff660e0ff349dee84dc4f6f6d10da4497f5b28"}, {"url": "https://git.kernel.org/stable/c/29346e217b8ab8a52889b88f00b268278d6b7668"}], "x_generator": {"engine": "bippy-9e1c9544281a"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRevert \"tty: n_gsm: fix UAF in gsm_cleanup_mux\"\n\nThis reverts commit 9b9c8195f3f0d74a826077fc1c01b9ee74907239.\n\nThe commit above is reverted as it did not solve the original issue.\n\ngsm_cleanup_mux() tries to free up the virtual ttys by calling\ngsm_dlci_release() for each available DLCI. There, dlci_put() is called to\ndecrease the reference counter for the DLCI via tty_port_put() which\nfinally calls gsm_dlci_free(). This already clears the pointer which is\nbeing checked in gsm_cleanup_mux() before calling gsm_dlci_release().\nTherefore, it is not necessary to clear this pointer in gsm_cleanup_mux()\nas done in the reverted commit. The commit introduces a null pointer\ndereference:\n <TASK>\n ? __die+0x1f/0x70\n ? page_fault_oops+0x156/0x420\n ? search_exception_tables+0x37/0x50\n ? fixup_exception+0x21/0x310\n ? exc_page_fault+0x69/0x150\n ? asm_exc_page_fault+0x26/0x30\n ? tty_port_put+0x19/0xa0\n gsmtty_cleanup+0x29/0x80 [n_gsm]\n release_one_tty+0x37/0xe0\n process_one_work+0x1e6/0x3e0\n worker_thread+0x4c/0x3d0\n ? __pfx_worker_thread+0x10/0x10\n kthread+0xe1/0x110\n ? __pfx_kthread+0x10/0x10\n ret_from_fork+0x2f/0x50\n ? __pfx_kthread+0x10/0x10\n ret_from_fork_asm+0x1b/0x30\n </TASK>\n\nThe actual issue is that nothing guards dlci_put() from being called\nmultiple times while the tty driver was triggered but did not yet finished\ncalling gsm_dlci_free()."}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-11-04T14:48:49.186Z"}}}, "cveMetadata": {"cveId": "CVE-2023-52564", "state": "PUBLISHED", "dateUpdated": "2024-11-04T14:48:49.186Z", "dateReserved": "2024-03-02T21:55:42.567Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-03-02T21:59:36.867Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRevert \"tty: n_gsm: fix UAF in gsm_cleanup_mux\"\n\nThis reverts commit 9b9c8195f3f0d74a826077fc1c01b9ee74907239.\n\nThe commit above is reverted as it did not solve the original issue.\n\ngsm_cleanup_mux() tries to free up the virtual ttys by calling\ngsm_dlci_release() for each available DLCI. There, dlci_put() is called to\ndecrease the reference counter for the DLCI via tty_port_put() which\nfinally calls gsm_dlci_free(). This already clears the pointer which is\nbeing checked in gsm_cleanup_mux() before calling gsm_dlci_release().\nTherefore, it is not necessary to clear this pointer in gsm_cleanup_mux()\nas done in the reverted commit. The commit introduces a null pointer\ndereference:\n <TASK>\n ? __die+0x1f/0x70\n ? page_fault_oops+0x156/0x420\n ? search_exception_tables+0x37/0x50\n ? fixup_exception+0x21/0x310\n ? exc_page_fault+0x69/0x150\n ? asm_exc_page_fault+0x26/0x30\n ? tty_port_put+0x19/0xa0\n gsmtty_cleanup+0x29/0x80 [n_gsm]\n release_one_tty+0x37/0xe0\n process_one_work+0x1e6/0x3e0\n worker_thread+0x4c/0x3d0\n ? __pfx_worker_thread+0x10/0x10\n kthread+0xe1/0x110\n ? __pfx_kthread+0x10/0x10\n ret_from_fork+0x2f/0x50\n ? __pfx_kthread+0x10/0x10\n ret_from_fork_asm+0x1b/0x30\n </TASK>\n\nThe actual issue is that nothing guards dlci_put() from being called\nmultiple times while the tty driver was triggered but did not yet finished\ncalling gsm_dlci_free()."}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: Revertir \"tty: n_gsm: fix UAF in gsm_cleanup_mux\" Esto revierte el commit 9b9c8195f3f0d74a826077fc1c01b9ee74907239. el commit anterior se revierte porque no resolvi\u00f3 el problema original. gsm_cleanup_mux() intenta liberar los ttys virtuales llamando a gsm_dlci_release() para cada DLCI disponible. All\u00ed, se llama a dlci_put() para disminuir el contador de referencia para el DLCI a trav\u00e9s de tty_port_put() que finalmente llama a gsm_dlci_free(). Esto ya borra el puntero que se est\u00e1 verificando en gsm_cleanup_mux() antes de llamar a gsm_dlci_release(). Por lo tanto, no es necesario borrar este puntero en gsm_cleanup_mux() como se hizo en el commit revertida. el commit introduce una desreferencia de puntero nulo: ? __die+0x1f/0x70 ? page_fault_oops+0x156/0x420? search_exception_tables+0x37/0x50? fixup_exception+0x21/0x310? exc_page_fault+0x69/0x150? asm_exc_page_fault+0x26/0x30? tty_port_put+0x19/0xa0 gsmtty_cleanup+0x29/0x80 [n_gsm] release_one_tty+0x37/0xe0 proceso_one_work+0x1e6/0x3e0 trabajador_thread+0x4c/0x3d0 ? __pfx_worker_thread+0x10/0x10 kthread+0xe1/0x110 ? __pfx_kthread+0x10/0x10 ret_from_fork+0x2f/0x50 ? __pfx_kthread+0x10/0x10 ret_from_fork_asm+0x1b/0x30 El problema real es que nada protege a dlci_put() de ser llamado varias veces mientras el controlador tty se activ\u00f3 pero a\u00fan no termin\u00f3 de llamar a gsm_dlci_free()."}], "id": "CVE-2023-52564", "lastModified": "2024-05-28T20:16:33.820", "metrics": {}, "published": "2024-03-02T22:15:48.933", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/29346e217b8ab8a52889b88f00b268278d6b7668"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2bff660e0ff349dee84dc4f6f6d10da4497f5b28"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6d5c8862932d31a810b6545f7d69ecc124402c6e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a48d2bcd23f2c98d575bc2f9b7a3fbd16aeea9eb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c61d0b87a7028c2c10faffc524d748334c7b9827"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: tty: n_gsm: use-after-free in gsm_cleanup_mux()", "id": "2267738", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2267738"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-416", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nRevert \"tty: n_gsm: fix UAF in gsm_cleanup_mux\"\nThis reverts commit 9b9c8195f3f0d74a826077fc1c01b9ee74907239.\nThe commit above is reverted as it did not solve the original issue.\ngsm_cleanup_mux() tries to free up the virtual ttys by calling\ngsm_dlci_release() for each available DLCI. There, dlci_put() is called to\ndecrease the reference counter for the DLCI via tty_port_put() which\nfinally calls gsm_dlci_free(). This already clears the pointer which is\nbeing checked in gsm_cleanup_mux() before calling gsm_dlci_release().\nTherefore, it is not necessary to clear this pointer in gsm_cleanup_mux()\nas done in the reverted commit. The commit introduces a null pointer\ndereference:\n<TASK>\n? __die+0x1f/0x70\n? page_fault_oops+0x156/0x420\n? search_exception_tables+0x37/0x50\n? fixup_exception+0x21/0x310\n? exc_page_fault+0x69/0x150\n? asm_exc_page_fault+0x26/0x30\n? tty_port_put+0x19/0xa0\ngsmtty_cleanup+0x29/0x80 [n_gsm]\nrelease_one_tty+0x37/0xe0\nprocess_one_work+0x1e6/0x3e0\nworker_thread+0x4c/0x3d0\n? __pfx_worker_thread+0x10/0x10\nkthread+0xe1/0x110\n? __pfx_kthread+0x10/0x10\nret_from_fork+0x2f/0x50\n? __pfx_kthread+0x10/0x10\nret_from_fork_asm+0x1b/0x30\n</TASK>\nThe actual issue is that nothing guards dlci_put() from being called\nmultiple times while the tty driver was triggered but did not yet finished\ncalling gsm_dlci_free().", "A use-after-free flaw was found in the Linux kernel that may lead to a crash."], "name": "CVE-2023-52564", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-03-02T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-52564\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-52564\nhttps://lore.kernel.org/linux-cve-announce/2024030253-CVE-2023-52564-88cb@gregkh/T/#u"], "threat_severity": "Moderate", "upstream_fix": "kernel 5.10.198, kernel 5.15.134, kernel 6.1.56, kernel 6.5.6, kernel 6.6"}