Description
In the Linux kernel, the following vulnerability has been resolved: smb: client: fix next_buffer UAF and NextCommand bounds in compound PDUs Fix several related bounds checking and pointer lifecycle issues in receive_encrypted_standard()'s handling of compound encrypted frames: - Clear next_buffer after assigning it to server->bigbuf. A stale next_buffer pointer can lead to a use-after-free on subsequent error paths. - Update pdu_length to the decrypted plaintext size (buf_size). Using the pre-decryption length allows NextCommand to point into stale ciphertext residue. - Reject next_cmd values smaller than MID_HEADER_SIZE(server). - Fix an integer overflow in the upper bound check by verifying pdu_length - next_cmd < MID_HEADER_SIZE(server), ensuring the trailing slice is large enough for a header.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
b24df3e30cbf48255db866720fb71f14bf9d2f39 to < 1ed29f7a03417b405f38c09cfe04124883127b53affectedb24df3e30cbf48255db866720fb71f14bf9d2f39 to < 7f022867ec9f0166a0b4400385bb601b1c6b2c75affectedb24df3e30cbf48255db866720fb71f14bf9d2f39 to < 72eaef1f37a3b6bec11c342736834dc3707be3e4affectedb24df3e30cbf48255db866720fb71f14bf9d2f39 to < 491e33144dee872cffda207f6fcb09260728f803affectedb24df3e30cbf48255db866720fb71f14bf9d2f39 to < 8749946579708ea0d339034bb7f423a67dbe89cfaffectedb24df3e30cbf48255db866720fb71f14bf9d2f39 to < 96c436e4b010711452b2872558938f4ef276492aaffectedb24df3e30cbf48255db866720fb71f14bf9d2f39 to < 858d5ac22cb889266993e7670f9f0c4f4aeedd78affectedb24df3e30cbf48255db866720fb71f14bf9d2f39 to < 05762c5bc1cfdcac36747994fde2c04387a457f1affected
Linux Linux
Default version status: affected
4.19affected0 to < 4.19unaffected5.10.273 to ≤ 5.10.*unaffected5.15.224 to ≤ 5.15.*unaffected6.1.189 to ≤ 6.1.*unaffected6.6.158 to ≤ 6.6.*unaffected6.12.112 to ≤ 6.12.*unaffected6.18.54 to ≤ 6.18.*unaffected7.2.8 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/1ed29f7a03417b405f38c09cfe04124883127b53 ↗
- https://git.kernel.org/stable/c/7f022867ec9f0166a0b4400385bb601b1c6b2c75 ↗
- https://git.kernel.org/stable/c/72eaef1f37a3b6bec11c342736834dc3707be3e4 ↗
- https://git.kernel.org/stable/c/491e33144dee872cffda207f6fcb09260728f803 ↗
- https://git.kernel.org/stable/c/8749946579708ea0d339034bb7f423a67dbe89cf ↗
- https://git.kernel.org/stable/c/96c436e4b010711452b2872558938f4ef276492a ↗
- https://git.kernel.org/stable/c/858d5ac22cb889266993e7670f9f0c4f4aeedd78 ↗
- https://git.kernel.org/stable/c/05762c5bc1cfdcac36747994fde2c04387a457f1 ↗