Description
In the Linux kernel, the following vulnerability has been resolved: vsock: fix buffer size clamping order In vsock_update_buffer_size(), the buffer size was being clamped to the maximum first, and then to the minimum. If a user sets a minimum buffer size larger than the maximum, the minimum check overrides the maximum check, inverting the constraint. This breaks the intended socket memory boundaries by allowing the vsk->buffer_size to grow beyond the configured vsk->buffer_max_size. Fix this by checking the minimum first, and then the maximum. This ensures the buffer size never exceeds the buffer_max_size.
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
b9f2b0ffde0c9b666b2b1672eb468b8f805a9b97 to < f6ec135941d2c1c2dbb87b5ce1783f4f6ac6cccaaffectedb9f2b0ffde0c9b666b2b1672eb468b8f805a9b97 to < caf11dfea5233a69298a1c448bbf8d1639c80536affectedb9f2b0ffde0c9b666b2b1672eb468b8f805a9b97 to < 01ef69785dc3162f588a361ab770b1e312800188affectedb9f2b0ffde0c9b666b2b1672eb468b8f805a9b97 to < a998a7e250bf976539e05a00ec64a81292afecaaaffectedb9f2b0ffde0c9b666b2b1672eb468b8f805a9b97 to < 310da27932dd0afe7ce7456dfe1f0814c3301f41affectedb9f2b0ffde0c9b666b2b1672eb468b8f805a9b97 to < 2602f7bb5818e92315feeaeb71d8ce4d5c9ab160affectedb9f2b0ffde0c9b666b2b1672eb468b8f805a9b97 to < 0b68881501460c3761f196469e1e503218c5e536affectedb9f2b0ffde0c9b666b2b1672eb468b8f805a9b97 to < d114bfdc9b76bf93b881e195b7ec957c14227babaffected
Linux Linux
Default version status: affected
5.5affected0 to < 5.5unaffected5.10.258 to ≤ 5.10.*unaffected5.15.209 to ≤ 5.15.*unaffected6.1.175 to ≤ 6.1.*unaffected6.6.140 to ≤ 6.6.*unaffected6.12.90 to ≤ 6.12.*unaffected6.18.32 to ≤ 6.18.*unaffected7.0.9 to ≤ 7.0.*unaffected7.1 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/f6ec135941d2c1c2dbb87b5ce1783f4f6ac6ccca ↗
- https://git.kernel.org/stable/c/caf11dfea5233a69298a1c448bbf8d1639c80536 ↗
- https://git.kernel.org/stable/c/01ef69785dc3162f588a361ab770b1e312800188 ↗
- https://git.kernel.org/stable/c/a998a7e250bf976539e05a00ec64a81292afecaa ↗
- https://git.kernel.org/stable/c/310da27932dd0afe7ce7456dfe1f0814c3301f41 ↗
- https://git.kernel.org/stable/c/2602f7bb5818e92315feeaeb71d8ce4d5c9ab160 ↗
- https://git.kernel.org/stable/c/0b68881501460c3761f196469e1e503218c5e536 ↗
- https://git.kernel.org/stable/c/d114bfdc9b76bf93b881e195b7ec957c14227bab ↗
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html ↗