{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2025-39724", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T07:20:57.117Z", "datePublished": "2025-09-05T17:21:32.005Z", "dateUpdated": "2025-09-29T05:58:11.937Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-09-29T05:58:11.937Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nserial: 8250: fix panic due to PSLVERR\n\nWhen the PSLVERR_RESP_EN parameter is set to 1, the device generates\nan error response if an attempt is made to read an empty RBR (Receive\nBuffer Register) while the FIFO is enabled.\n\nIn serial8250_do_startup(), calling serial_port_out(port, UART_LCR,\nUART_LCR_WLEN8) triggers dw8250_check_lcr(), which invokes\ndw8250_force_idle() and serial8250_clear_and_reinit_fifos(). The latter\nfunction enables the FIFO via serial_out(p, UART_FCR, p->fcr).\nExecution proceeds to the serial_port_in(port, UART_RX).\nThis satisfies the PSLVERR trigger condition.\n\nWhen another CPU (e.g., using printk()) is accessing the UART (UART\nis busy), the current CPU fails the check (value & ~UART_LCR_SPAR) ==\n(lcr & ~UART_LCR_SPAR) in dw8250_check_lcr(), causing it to enter\ndw8250_force_idle().\n\nPut serial_port_out(port, UART_LCR, UART_LCR_WLEN8) under the port->lock\nto fix this issue.\n\nPanic backtrace:\n[ 0.442336] Oops - unknown exception [#1]\n[ 0.442343] epc : dw8250_serial_in32+0x1e/0x4a\n[ 0.442351] ra : serial8250_do_startup+0x2c8/0x88e\n...\n[ 0.442416] console_on_rootfs+0x26/0x70"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/tty/serial/8250/8250_port.c"], "versions": [{"version": "c49436b657d0a56a6ad90d14a7c3041add7cf64d", "lessThan": "0b882f00655afefbc7729c6b5aec86f7a5473a3d", "status": "affected", "versionType": "git"}, {"version": "c49436b657d0a56a6ad90d14a7c3041add7cf64d", "lessThan": "b8ca8e3f75ede308b4d49a6ca5081460be01bdb5", "status": "affected", "versionType": "git"}, {"version": "c49436b657d0a56a6ad90d14a7c3041add7cf64d", "lessThan": "68c4613e89f000e8198f9ace643082c697921c9f", "status": "affected", "versionType": "git"}, {"version": "c49436b657d0a56a6ad90d14a7c3041add7cf64d", "lessThan": "c826943abf473a3f7260fbadfad65e44db475460", "status": "affected", "versionType": "git"}, {"version": "c49436b657d0a56a6ad90d14a7c3041add7cf64d", "lessThan": "cb7b3633ed749db8e56f475f43c960652cbd6882", "status": "affected", "versionType": "git"}, {"version": "c49436b657d0a56a6ad90d14a7c3041add7cf64d", "lessThan": "8e2739478c164147d0774802008528d9e03fb802", "status": "affected", "versionType": "git"}, {"version": "c49436b657d0a56a6ad90d14a7c3041add7cf64d", "lessThan": "38c0ea484dedb58cb3a4391229933e16be0d1031", "status": "affected", "versionType": "git"}, {"version": "c49436b657d0a56a6ad90d14a7c3041add7cf64d", "lessThan": "7f8fdd4dbffc05982b96caf586f77a014b2a9353", "status": "affected", "versionType": "git"}, {"version": "6d5e79331417886196cb3a733bdb6645ba85bc42", "status": "affected", "versionType": "git"}, {"version": "2401577586898b3590db80f8b97a26f81f0f6d4e", "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/serial/8250/8250_port.c"], "versions": [{"version": "3.13", "status": "affected"}, {"version": "0", "lessThan": "3.13", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.297", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.241", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.190", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.149", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.103", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.44", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.16.4", "lessThanOrEqual": "6.16.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.17", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "5.4.297"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "5.10.241"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "5.15.190"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "6.1.149"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "6.6.103"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "6.12.44"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "6.16.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "6.17"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10.48"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.12.24"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/0b882f00655afefbc7729c6b5aec86f7a5473a3d"}, {"url": "https://git.kernel.org/stable/c/b8ca8e3f75ede308b4d49a6ca5081460be01bdb5"}, {"url": "https://git.kernel.org/stable/c/68c4613e89f000e8198f9ace643082c697921c9f"}, {"url": "https://git.kernel.org/stable/c/c826943abf473a3f7260fbadfad65e44db475460"}, {"url": "https://git.kernel.org/stable/c/cb7b3633ed749db8e56f475f43c960652cbd6882"}, {"url": "https://git.kernel.org/stable/c/8e2739478c164147d0774802008528d9e03fb802"}, {"url": "https://git.kernel.org/stable/c/38c0ea484dedb58cb3a4391229933e16be0d1031"}, {"url": "https://git.kernel.org/stable/c/7f8fdd4dbffc05982b96caf586f77a014b2a9353"}], "title": "serial: 8250: fix panic due to PSLVERR", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nserial: 8250: fix panic due to PSLVERR\n\nWhen the PSLVERR_RESP_EN parameter is set to 1, the device generates\nan error response if an attempt is made to read an empty RBR (Receive\nBuffer Register) while the FIFO is enabled.\n\nIn serial8250_do_startup(), calling serial_port_out(port, UART_LCR,\nUART_LCR_WLEN8) triggers dw8250_check_lcr(), which invokes\ndw8250_force_idle() and serial8250_clear_and_reinit_fifos(). The latter\nfunction enables the FIFO via serial_out(p, UART_FCR, p->fcr).\nExecution proceeds to the serial_port_in(port, UART_RX).\nThis satisfies the PSLVERR trigger condition.\n\nWhen another CPU (e.g., using printk()) is accessing the UART (UART\nis busy), the current CPU fails the check (value & ~UART_LCR_SPAR) ==\n(lcr & ~UART_LCR_SPAR) in dw8250_check_lcr(), causing it to enter\ndw8250_force_idle().\n\nPut serial_port_out(port, UART_LCR, UART_LCR_WLEN8) under the port->lock\nto fix this issue.\n\nPanic backtrace:\n[ 0.442336] Oops - unknown exception [#1]\n[ 0.442343] epc : dw8250_serial_in32+0x1e/0x4a\n[ 0.442351] ra : serial8250_do_startup+0x2c8/0x88e\n...\n[ 0.442416] console_on_rootfs+0x26/0x70"}], "id": "CVE-2025-39724", "lastModified": "2025-09-08T16:25:38.810", "metrics": {}, "published": "2025-09-05T18:15:50.177", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0b882f00655afefbc7729c6b5aec86f7a5473a3d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/38c0ea484dedb58cb3a4391229933e16be0d1031"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/68c4613e89f000e8198f9ace643082c697921c9f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7f8fdd4dbffc05982b96caf586f77a014b2a9353"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8e2739478c164147d0774802008528d9e03fb802"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b8ca8e3f75ede308b4d49a6ca5081460be01bdb5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c826943abf473a3f7260fbadfad65e44db475460"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/cb7b3633ed749db8e56f475f43c960652cbd6882"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: serial: 8250: fix panic due to PSLVERR", "id": "2393486", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2393486"}, "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"}, "details": ["No description is available for this CVE."], "name": "CVE-2025-39724", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"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": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-09-05T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-39724\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-39724\nhttps://lore.kernel.org/linux-cve-announce/2025090552-CVE-2025-39724-7097@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-09-06T09:01:29.197317+00:00", "updated": "2025-09-06T09:01:29.197373+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}