CVE-2026-63805

{"id": "CVE-2026-63805", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "bfd9efddf990d152dc9912fdca520c5e1e19e1e2", "lessThan": "8d8507a457667f23477a15496b91908a5b5b7cf3", "versionType": "git"}, {"status": "affected", "version": "bfd9efddf990d152dc9912fdca520c5e1e19e1e2", "lessThan": "833033e6e55acf11304ff7bbbdf18351d139c281", "versionType": "git"}, {"status": "affected", "version": "bfd9efddf990d152dc9912fdca520c5e1e19e1e2", "lessThan": "4e67f504ee9ded15e256b64f4fde150e917381d7", "versionType": "git"}], "programFiles": ["drivers/crypto/nx/nx.c", "drivers/crypto/nx/nx.h"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.5"}, {"status": "unaffected", "version": "0", "lessThan": "5.5", "versionType": "semver"}, {"status": "unaffected", "version": "6.18.38", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.1.3", "versionType": "semver", "lessThanOrEqual": "7.1.*"}, {"status": "unaffected", "version": "7.2-rc1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/crypto/nx/nx.c", "drivers/crypto/nx/nx.h"], "defaultStatus": "affected"}]}], "published": "2026-07-19T12:16:53.230", "references": [{"url": "https://git.kernel.org/stable/c/4e67f504ee9ded15e256b64f4fde150e917381d7", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/833033e6e55acf11304ff7bbbdf18351d139c281", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/8d8507a457667f23477a15496b91908a5b5b7cf3", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "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."}], "lastModified": "2026-07-29T20:01:46.657", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8DAD3EB4-1943-4EC2-9D46-C93C12C5F441", "versionEndExcluding": "6.18.38", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9526B150-E2B3-4C6F-8AE5-1AF92B75AD9E", "versionEndExcluding": "7.1.3", "versionStartIncluding": "6.19"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}