Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: tty: n_gsm: fix possible out-of-bounds in gsm0_receive() Assuming the following: - side A configures the n_gsm in basic option mode - side B sends the header of a basic option mode frame with data length 1 - side A switches to advanced option mode - side B sends 2 data bytes which exceeds gsm->len Reason: gsm->len is not used in advanced option mode. - side A switches to basic option mode - side B keeps sending until gsm0_receive() writes past gsm->buf Reason: Neither gsm->state nor gsm->len have been reset after reconfiguration. Fix this by changing gsm->count to gsm->len comparison from equal to less than. Also add upper limit checks against the constant MAX_MRU in gsm0_receive() and gsm1_receive() to harden against memory corruption of gsm->len and gsm->mru. All other checks remain as we still need to limit the data according to the user configuration and actual payload size.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected e1eaea46bb4020b38a141b84f88565d4603f8dd0 before 9513d4148950b05bc99fa7314dc883cc0e1605e5; affected e1eaea46bb4020b38a141b84f88565d4603f8dd0 before b229bc6c6ea9fe459fc3fa94fd0a27a2f32aca56; affected e1eaea46bb4020b38a141b84f88565d4603f8dd0 before 0fb736c9931e02dbc7d9a75044c8e1c039e50f04; affected e1eaea46bb4020b38a141b84f88565d4603f8dd0 before 4c267110fc110390704cc065edb9817fdd10ff54; affected e1eaea46bb4020b38a141b84f88565d4603f8dd0 before 46f52c89a7e7d2691b97a9728e4591d071ca8abc; affected e1eaea46bb4020b38a141b84f88565d4603f8dd0 before 774d83b008eccb1c48c14dc5486e7aa255731350; affected e1eaea46bb4020b38a141b84f88565d4603f8dd0 before f126ce7305fe88f49cdabc6db4168b9318898ea3; affected e1eaea46bb4020b38a141b84f88565d4603f8dd0 before b890d45aaf02b564e6cae2d2a590f9649330857d; affected e1eaea46bb4020b38a141b84f88565d4603f8dd0 before 47388e807f85948eefc403a8a5fdc5b406a65d5a |
| Linux / Linux | affected 2.6.35; unaffected 0 before 2.6.35; unaffected 4.19.316 through 4.19.*; unaffected 5.4.278 through 5.4.*; unaffected 5.10.219 through 5.10.*; unaffected 5.15.161 through 5.15.*; unaffected 6.1.93 through 6.1.*; unaffected 6.6.33 through 6.6.*; unaffected 6.8.12 through 6.8.*; unaffected 6.9.3 through 6.9.*; unaffected 6.10 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/9513d4148950b05bc99fa7314dc883cc0e1605e5
- https://git.kernel.org/stable/c/b229bc6c6ea9fe459fc3fa94fd0a27a2f32aca56
- https://git.kernel.org/stable/c/0fb736c9931e02dbc7d9a75044c8e1c039e50f04
- https://git.kernel.org/stable/c/4c267110fc110390704cc065edb9817fdd10ff54
- https://git.kernel.org/stable/c/46f52c89a7e7d2691b97a9728e4591d071ca8abc
- https://git.kernel.org/stable/c/774d83b008eccb1c48c14dc5486e7aa255731350
- https://git.kernel.org/stable/c/f126ce7305fe88f49cdabc6db4168b9318898ea3
- https://git.kernel.org/stable/c/b890d45aaf02b564e6cae2d2a590f9649330857d
- https://git.kernel.org/stable/c/47388e807f85948eefc403a8a5fdc5b406a65d5a
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.
- https://git.kernel.org/stable/c/9513d4148950b05bc99fa7314dc883cc0e1605e5
- https://git.kernel.org/stable/c/b229bc6c6ea9fe459fc3fa94fd0a27a2f32aca56
- https://git.kernel.org/stable/c/0fb736c9931e02dbc7d9a75044c8e1c039e50f04
- https://git.kernel.org/stable/c/4c267110fc110390704cc065edb9817fdd10ff54
- https://git.kernel.org/stable/c/46f52c89a7e7d2691b97a9728e4591d071ca8abc
- https://git.kernel.org/stable/c/774d83b008eccb1c48c14dc5486e7aa255731350
- https://git.kernel.org/stable/c/f126ce7305fe88f49cdabc6db4168b9318898ea3
- https://git.kernel.org/stable/c/b890d45aaf02b564e6cae2d2a590f9649330857d
- https://git.kernel.org/stable/c/47388e807f85948eefc403a8a5fdc5b406a65d5a
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html