Informazioni sul CVE-2024-36016
tty: n_gsm: fix possible out-of-bounds in gsm0_receive()
CWE ID: N/A
Base Score (CVSS): N/A
CVE: CVE-2024-36016
Descrizione: 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.
Vettore di attacco
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Riferimenti esterni
- 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
Prodotti interessati
- Linux – Linux
- Linux – Linux