** Description changed: SRU Justification [Impact] * Request from Microsoft to address potential memory coherence issue in MANA driver where memory read in DMA-coherent region is read twice and could possibly change between invocations. Rather, the memory should be read into a local variable, and passed to the second function by parameter, rather than re-reading from memory. [Fix] - * Resolute: - - Clean cherry-pick of linux-next patches: - - 35f0f0a2536a: "net: mana: Fix TOCTOU double-fetch of hwc_msg_id from DMA buffer" + * Clean cherry-pick of linux-next patches: + - 35f0f0a2536a: "net: mana: Fix TOCTOU double-fetch of hwc_msg_id from DMA buffer" [Test Plan] * Compile tested * Boot tested * Microsoft tested [Regression potential] * Patches isolated to MANA specifically. Possibly regression could result in unexpected behavior of MANA driver. [Other info] * SF#00438816
** Description changed: SRU Justification [Impact] * Request from Microsoft to address potential memory coherence issue in MANA driver where memory read in DMA-coherent region is read twice and could possibly change between invocations. Rather, the memory should be read into a local variable, and passed to the second function by parameter, rather than re-reading from memory. [Fix] - * Clean cherry-pick of linux-next patches: + * Clean cherry-pick upstream patch: - 35f0f0a2536a: "net: mana: Fix TOCTOU double-fetch of hwc_msg_id from DMA buffer" [Test Plan] * Compile tested * Boot tested * Microsoft tested [Regression potential] * Patches isolated to MANA specifically. Possibly regression could result in unexpected behavior of MANA driver. [Other info] * SF#00438816 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2156472 Title: net: mana: Fix TOCTOU double-fetch of hwc_msg_id from DMA buffer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-azure/+bug/2156472/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
