Description
In the Linux kernel, the following vulnerability has been resolved: RDMA/irdma: Prevent user-triggered null deref on QP create Previously, the user QP creation path would only attempt to populate iwqp->iwpbl if the user-provided req.user_wqe_bufs field was non-zero. The problem is that iwqp->iwpbl is unconditionally dereferenced later on in irdma_setup_virt_qp. While there was a check for iwqp->iwpbl != NULL, this check would only occur if req.user_wqe_bufs was non-zero. The end result is that a user could send a zero user_wqe_bufs value and trigger a null ptr deref. Fix this by unconditionally calling irdma_get_pbl and bailing if it fails, similar to the CQ and SRQ paths.
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
b48c24c2d710cf34810c555dcef883a3d35a9c08 to < d52ff592abfcd56234f266aa245c489f70b1c554affectedb48c24c2d710cf34810c555dcef883a3d35a9c08 to < ad68e0b759f9569f0dfea84f035c91eadb979802affectedb48c24c2d710cf34810c555dcef883a3d35a9c08 to < ec675b4cdfd378d8c9dd8c93126c024f2469bd79affectedb48c24c2d710cf34810c555dcef883a3d35a9c08 to < 728211c815f6eef28dd3df2a5b6297483185aa20affectedb48c24c2d710cf34810c555dcef883a3d35a9c08 to < b9b0889071569d43623c260074e159cd8f26adb1affected
Linux Linux
Default version status: affected
5.14affected0 to < 5.14unaffected6.6.160 to ≤ 6.6.*unaffected6.12.114 to ≤ 6.12.*unaffected6.18.42 to ≤ 6.18.*unaffected7.1.6 to ≤ 7.1.*unaffected7.2 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/d52ff592abfcd56234f266aa245c489f70b1c554 ↗
- https://git.kernel.org/stable/c/ad68e0b759f9569f0dfea84f035c91eadb979802 ↗
- https://git.kernel.org/stable/c/ec675b4cdfd378d8c9dd8c93126c024f2469bd79 ↗
- https://git.kernel.org/stable/c/728211c815f6eef28dd3df2a5b6297483185aa20 ↗
- https://git.kernel.org/stable/c/b9b0889071569d43623c260074e159cd8f26adb1 ↗