{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-63805", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T07:54:57.013Z", "datePublished": "2026-07-19T12:02:09.669Z", "dateUpdated": "2026-07-20T13:40:14.519Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-07-20T13:40:14.519Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: nx - fix nx_crypto_ctx_exit argument\n\nnx_crypto_ctx_shash_exit calls nx_crypto_ctx_exit with crypto_shash_ctx(...)\nbut crypto_shash_ctx gives a nx_crypto_ctx *, not a crypto_tfm *.\n\nFix the type in nx_crypto_ctx_exit and drop the bogus crypto_tfm_ctx\ncall.\n\nThis fixes the following oops:\n\n BUG: Unable to handle kernel data access at 0xc0403effffffffc8\n Faulting instruction address: 0xc000000000396cb4\n Oops: Kernel access of bad area, sig: 11 [#15]\n Call Trace:\n nx_crypto_ctx_shash_exit+0x24/0x60\n crypto_shash_exit_tfm+0x28/0x40\n crypto_destroy_tfm+0x98/0x140\n crypto_exit_ahash_using_shash+0x20/0x40\n crypto_destroy_tfm+0x98/0x140\n hash_release+0x1c/0x30\n alg_sock_destruct+0x38/0x60\n __sk_destruct+0x48/0x2b0\n af_alg_release+0x58/0xb0\n __sock_release+0x68/0x150\n sock_close+0x20/0x40\n __fput+0x110/0x3a0\n sys_close+0x48/0xa0\n system_call_exception+0x140/0x2d0\n system_call_common+0xf4/0x258\n\n.. which came from hardlink(1) opportunistically using AF_ALG.\n\nThe same problem exists with nx_crypto_ctx_skcipher_exit getting a context\nit wasn't expecting, but apparently nobody hit that for years."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/crypto/nx/nx.c", "drivers/crypto/nx/nx.h"], "versions": [{"version": "bfd9efddf990d152dc9912fdca520c5e1e19e1e2", "lessThan": "8d8507a457667f23477a15496b91908a5b5b7cf3", "status": "affected", "versionType": "git"}, {"version": "bfd9efddf990d152dc9912fdca520c5e1e19e1e2", "lessThan": "833033e6e55acf11304ff7bbbdf18351d139c281", "status": "affected", "versionType": "git"}, {"version": "bfd9efddf990d152dc9912fdca520c5e1e19e1e2", "lessThan": "4e67f504ee9ded15e256b64f4fde150e917381d7", "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/crypto/nx/nx.c", "drivers/crypto/nx/nx.h"], "versions": [{"version": "5.5", "status": "affected"}, {"version": "0", "lessThan": "5.5", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.38", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.3", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2-rc1", "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": "5.5", "versionEndExcluding": "6.18.38"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.5", "versionEndExcluding": "7.1.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.5", "versionEndExcluding": "7.2-rc1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/8d8507a457667f23477a15496b91908a5b5b7cf3"}, {"url": "https://git.kernel.org/stable/c/833033e6e55acf11304ff7bbbdf18351d139c281"}, {"url": "https://git.kernel.org/stable/c/4e67f504ee9ded15e256b64f4fde150e917381d7"}], "title": "crypto: nx - fix nx_crypto_ctx_exit argument", "x_generator": {"engine": "bippy-1.2.0"}}}}

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