CVE-2026-64544
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
crypto: asymmetric_keys - fix OOB read in pefile_digest_pe_contents
In the Linux kernel, the following vulnerability has been resolved: crypto: asymmetric_keys - fix OOB read in pefile_digest_pe_contents pefile_digest_pe_contents() computes the trailing-data hash length as pelen - (hashed_bytes + certs_size). A crafted PE can make the addition exceed pelen, causing the unsigned subtraction to underflow to ~4 GiB. This is passed to crypto_shash_update() which reads out of bounds and panics on unmapped vmalloc guard pages. BUG: unable to handle page fault for address: ffffc900038d8000 Oops: Oops: 0000 [#1] SMP KASAN NOPTI RIP: 0010:sha256_blocks_generic (lib/crypto/sha256.c:152) Call Trace: <TASK> __sha256_update (lib/crypto/sha256.c:208) crypto_sha256_update (crypto/sha256.c:142) verify_pefile_signature (crypto/asymmetric_keys/verify_pefile.c:436) kexec_kernel_verify_pe_sig (kernel/kexec_file.c:151) __do_sys_kexec_file_load (kernel/kexec_file.c:406) do_syscall_64 (arch/x86/entry/syscall_64.c:94) entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) </TASK> Kernel panic - not syncing: Fatal exception Validate that the addition does not overflow and the result does not exceed pelen before the subtraction. Return -ELIBBAD on failure.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| af316fc442ef23901bbfcec5af55e69ca6ce9563 | affected | git | 89efd998470a93284b7ad5a20d4e0e3c6858ae8e | Unavailable | None listed |
| af316fc442ef23901bbfcec5af55e69ca6ce9563 | affected | git | 7016377699b5b25b7ec3c0bf2ec3f983c7e95f7c | Unavailable | None listed |
| af316fc442ef23901bbfcec5af55e69ca6ce9563 | affected | git | b798ada5a5d1cb4cc4cfa72074b1b463eca6c506 | Unavailable | None listed |
| af316fc442ef23901bbfcec5af55e69ca6ce9563 | affected | git | 627938383761fb4334b41ebe7ef438d6b8b19d60 | Unavailable | None listed |
| af316fc442ef23901bbfcec5af55e69ca6ce9563 | affected | git | e162bc386e71b5412425a38ee048e8d2185491b9 | Unavailable | None listed |
| af316fc442ef23901bbfcec5af55e69ca6ce9563 | affected | git | 6acd2fbd00f9c72aebefce63fc2e73e8f3d79061 | Unavailable | None listed |
| af316fc442ef23901bbfcec5af55e69ca6ce9563 | affected | git | 803591785d33cf13b6f73ce2796e8b9e6d5e6526 | Unavailable | None listed |
| af316fc442ef23901bbfcec5af55e69ca6ce9563 | affected | git | f7dd32c5179d7755de18e21d5674b08f9e5cb180 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 3.17 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 3.17 | Unavailable | None listed |
| 5.10.261 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.212 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.178 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.145 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.97 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.40 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.1.5 | unaffected | semver | Unavailable | 7.1.* | None listed |
| 7.2 | unaffected | original_commit_for_fix | Unavailable | * | None listed |