{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2022-50341", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-09-16T16:03:27.881Z", "datePublished": "2025-09-16T16:11:20.838Z", "dateUpdated": "2025-09-16T16:11:32.923Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-09-16T16:11:32.923Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: fix oops during encryption\n\nWhen running xfstests against Azure the following oops occurred on an\narm64 system\n\n Unable to handle kernel write to read-only memory at virtual address\n ffff0001221cf000\n Mem abort info:\n ESR = 0x9600004f\n EC = 0x25: DABT (current EL), IL = 32 bits\n SET = 0, FnV = 0\n EA = 0, S1PTW = 0\n FSC = 0x0f: level 3 permission fault\n Data abort info:\n ISV = 0, ISS = 0x0000004f\n CM = 0, WnR = 1\n swapper pgtable: 4k pages, 48-bit VAs, pgdp=00000000294f3000\n [ffff0001221cf000] pgd=18000001ffff8003, p4d=18000001ffff8003,\n pud=18000001ff82e003, pmd=18000001ff71d003, pte=00600001221cf787\n Internal error: Oops: 9600004f [#1] PREEMPT SMP\n ...\n pstate: 80000005 (Nzcv daif -PAN -UAO -TCO BTYPE=--)\n pc : __memcpy+0x40/0x230\n lr : scatterwalk_copychunks+0xe0/0x200\n sp : ffff800014e92de0\n x29: ffff800014e92de0 x28: ffff000114f9de80 x27: 0000000000000008\n x26: 0000000000000008 x25: ffff800014e92e78 x24: 0000000000000008\n x23: 0000000000000001 x22: 0000040000000000 x21: ffff000000000000\n x20: 0000000000000001 x19: ffff0001037c4488 x18: 0000000000000014\n x17: 235e1c0d6efa9661 x16: a435f9576b6edd6c x15: 0000000000000058\n x14: 0000000000000001 x13: 0000000000000008 x12: ffff000114f2e590\n x11: ffffffffffffffff x10: 0000040000000000 x9 : ffff8000105c3580\n x8 : 2e9413b10000001a x7 : 534b4410fb86b005 x6 : 534b4410fb86b005\n x5 : ffff0001221cf008 x4 : ffff0001037c4490 x3 : 0000000000000001\n x2 : 0000000000000008 x1 : ffff0001037c4488 x0 : ffff0001221cf000\n Call trace:\n __memcpy+0x40/0x230\n scatterwalk_map_and_copy+0x98/0x100\n crypto_ccm_encrypt+0x150/0x180\n crypto_aead_encrypt+0x2c/0x40\n crypt_message+0x750/0x880\n smb3_init_transform_rq+0x298/0x340\n smb_send_rqst.part.11+0xd8/0x180\n smb_send_rqst+0x3c/0x100\n compound_send_recv+0x534/0xbc0\n smb2_query_info_compound+0x32c/0x440\n smb2_set_ea+0x438/0x4c0\n cifs_xattr_set+0x5d4/0x7c0\n\nThis is because in scatterwalk_copychunks(), we attempted to write to\na buffer (@sign) that was allocated in the stack (vmalloc area) by\ncrypt_message() and thus accessing its remaining 8 (x2) bytes ended up\ncrossing a page boundary.\n\nTo simply fix it, we could just pass @sign kmalloc'd from\ncrypt_message() and then we're done. Luckily, we don't seem to pass\nany other vmalloc'd buffers in smb_rqst::rq_iov...\n\nInstead, let's map the correct pages and offsets from vmalloc buffers\nas well in cifs_sg_set_buf() and then avoiding such oopses."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/cifs/cifsglob.h", "fs/cifs/cifsproto.h", "fs/cifs/misc.c", "fs/cifs/smb2ops.c"], "versions": [{"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "e8e2861cc3258dbe407d01ea8c59bb5a53132301", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "fe6ea044c4f05706cb71040055b1c70c6c8275e0", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "bf0543b93740916ee91956f9a63da6fc0d79daaa", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "a13e51760703f71c25d5fc1f4a62dfa4b0cc80e9", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "e8d16a54842d609fd4a3ed2d81d4333d6329aa94", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "f7f291e14dde32a07b1f0aa06921d28f875a7b54", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/cifs/cifsglob.h", "fs/cifs/cifsproto.h", "fs/cifs/misc.c", "fs/cifs/smb2ops.c"], "versions": [{"version": "5.4.229", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.163", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.87", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.0.16", "lessThanOrEqual": "6.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.1", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.2", "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:*:*:*:*:*:*:*:*", "versionEndExcluding": "5.4.229"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "5.10.163"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "5.15.87"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.0.16"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.1.1"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/e8e2861cc3258dbe407d01ea8c59bb5a53132301"}, {"url": "https://git.kernel.org/stable/c/fe6ea044c4f05706cb71040055b1c70c6c8275e0"}, {"url": "https://git.kernel.org/stable/c/bf0543b93740916ee91956f9a63da6fc0d79daaa"}, {"url": "https://git.kernel.org/stable/c/a13e51760703f71c25d5fc1f4a62dfa4b0cc80e9"}, {"url": "https://git.kernel.org/stable/c/e8d16a54842d609fd4a3ed2d81d4333d6329aa94"}, {"url": "https://git.kernel.org/stable/c/f7f291e14dde32a07b1f0aa06921d28f875a7b54"}], "title": "cifs: fix oops during encryption", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: fix oops during encryption\n\nWhen running xfstests against Azure the following oops occurred on an\narm64 system\n\n Unable to handle kernel write to read-only memory at virtual address\n ffff0001221cf000\n Mem abort info:\n ESR = 0x9600004f\n EC = 0x25: DABT (current EL), IL = 32 bits\n SET = 0, FnV = 0\n EA = 0, S1PTW = 0\n FSC = 0x0f: level 3 permission fault\n Data abort info:\n ISV = 0, ISS = 0x0000004f\n CM = 0, WnR = 1\n swapper pgtable: 4k pages, 48-bit VAs, pgdp=00000000294f3000\n [ffff0001221cf000] pgd=18000001ffff8003, p4d=18000001ffff8003,\n pud=18000001ff82e003, pmd=18000001ff71d003, pte=00600001221cf787\n Internal error: Oops: 9600004f [#1] PREEMPT SMP\n ...\n pstate: 80000005 (Nzcv daif -PAN -UAO -TCO BTYPE=--)\n pc : __memcpy+0x40/0x230\n lr : scatterwalk_copychunks+0xe0/0x200\n sp : ffff800014e92de0\n x29: ffff800014e92de0 x28: ffff000114f9de80 x27: 0000000000000008\n x26: 0000000000000008 x25: ffff800014e92e78 x24: 0000000000000008\n x23: 0000000000000001 x22: 0000040000000000 x21: ffff000000000000\n x20: 0000000000000001 x19: ffff0001037c4488 x18: 0000000000000014\n x17: 235e1c0d6efa9661 x16: a435f9576b6edd6c x15: 0000000000000058\n x14: 0000000000000001 x13: 0000000000000008 x12: ffff000114f2e590\n x11: ffffffffffffffff x10: 0000040000000000 x9 : ffff8000105c3580\n x8 : 2e9413b10000001a x7 : 534b4410fb86b005 x6 : 534b4410fb86b005\n x5 : ffff0001221cf008 x4 : ffff0001037c4490 x3 : 0000000000000001\n x2 : 0000000000000008 x1 : ffff0001037c4488 x0 : ffff0001221cf000\n Call trace:\n __memcpy+0x40/0x230\n scatterwalk_map_and_copy+0x98/0x100\n crypto_ccm_encrypt+0x150/0x180\n crypto_aead_encrypt+0x2c/0x40\n crypt_message+0x750/0x880\n smb3_init_transform_rq+0x298/0x340\n smb_send_rqst.part.11+0xd8/0x180\n smb_send_rqst+0x3c/0x100\n compound_send_recv+0x534/0xbc0\n smb2_query_info_compound+0x32c/0x440\n smb2_set_ea+0x438/0x4c0\n cifs_xattr_set+0x5d4/0x7c0\n\nThis is because in scatterwalk_copychunks(), we attempted to write to\na buffer (@sign) that was allocated in the stack (vmalloc area) by\ncrypt_message() and thus accessing its remaining 8 (x2) bytes ended up\ncrossing a page boundary.\n\nTo simply fix it, we could just pass @sign kmalloc'd from\ncrypt_message() and then we're done. Luckily, we don't seem to pass\nany other vmalloc'd buffers in smb_rqst::rq_iov...\n\nInstead, let's map the correct pages and offsets from vmalloc buffers\nas well in cifs_sg_set_buf() and then avoiding such oopses."}], "id": "CVE-2022-50341", "lastModified": "2025-09-16T17:15:33.660", "metrics": {}, "published": "2025-09-16T17:15:33.660", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a13e51760703f71c25d5fc1f4a62dfa4b0cc80e9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/bf0543b93740916ee91956f9a63da6fc0d79daaa"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e8d16a54842d609fd4a3ed2d81d4333d6329aa94"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e8e2861cc3258dbe407d01ea8c59bb5a53132301"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f7f291e14dde32a07b1f0aa06921d28f875a7b54"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fe6ea044c4f05706cb71040055b1c70c6c8275e0"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{}