CVSS: 4.4EPSS: 0%CPEs: 3EXPL: 0CVE-2024-40928 – net: ethtool: fix the error condition in ethtool_get_phy_stats_ethtool()
https://notcve.org/view.php?id=CVE-2024-40928
In the Linux kernel, the following vulnerability has been resolved: net: ethtool: fix the error condition in ethtool_get_phy_stats_ethtool() Clang static checker (scan-build) warning: net/ethtool/ioctl.c:line 2233, column 2 Called function pointer is null (null dereference). Return '-EOPNOTSUPP' when 'ops->get_ethtool_phy_stats' is NULL to fix this typo error. • https://git.kernel.org/stable/c/201ed315f9676809cd5b20a39206e964106d4f27 https://git.kernel.org/stable/c/6548d543a27449a1a3d8079925de93f5764d6f22 https://git.kernel.org/stable/c/92196be82a4eb61813833dc62876fd198ae51ab1 https://git.kernel.org/stable/c/0dcc53abf58d572d34c5313de85f607cd33fc691 https://access.redhat.com/security/cve/CVE-2024-40928 https://bugzilla.redhat.com/show_bug.cgi?id=2297512 • CWE-476: NULL Pointer Dereference •
CVSS: 6.1EPSS: 0%CPEs: 5EXPL: 0CVE-2024-40927 – xhci: Handle TD clearing for multiple streams case
https://notcve.org/view.php?id=CVE-2024-40927
In the Linux kernel, the following vulnerability has been resolved: xhci: Handle TD clearing for multiple streams case When multiple streams are in use, multiple TDs might be in flight when an endpoint is stopped. We need to issue a Set TR Dequeue Pointer for each, to ensure everything is reset properly and the caches cleared. Change the logic so that any N>1 TDs found active for different streams are deferred until after the first one is processed, calling xhci_invalidate_cancelled_tds() again from xhci_handle_cmd_set_deq() to queue another command until we are done with all of them. Also change the error/"should never happen" paths to ensure we at least clear any affected TDs, even if we can't issue a command to clear the hardware cache, and complain loudly with an xhci_warn() if this ever happens. This problem case dates back to commit e9df17eb1408 ("USB: xhci: Correct assumptions about number of rings per endpoint.") early on in the XHCI driver's life, when stream support was first added. It was then identified but not fixed nor made into a warning in commit 674f8438c121 ("xhci: split handling halted endpoints into two steps"), which added a FIXME comment for the problem case (without materially changing the behavior as far as I can tell, though the new logic made the problem more obvious). Then later, in commit 94f339147fc3 ("xhci: Fix failure to give back some cached cancelled URBs."), it was acknowledged again. [Mathias: commit 94f339147fc3 ("xhci: Fix failure to give back some cached cancelled URBs.") was a targeted regression fix to the previously mentioned patch. Users reported issues with usb stuck after unmounting/disconnecting UAS devices. This rolled back the TD clearing of multiple streams to its original state.] Apparently the commit author was aware of the problem (yet still chose to submit it): It was still mentioned as a FIXME, an xhci_dbg() was added to log the problem condition, and the remaining issue was mentioned in the commit description. • https://git.kernel.org/stable/c/e9df17eb1408cfafa3d1844bfc7f22c7237b31b8 https://git.kernel.org/stable/c/26460c1afa311524f588e288a4941432f0de6228 https://git.kernel.org/stable/c/633f72cb6124ecda97b641fbc119340bd88d51a9 https://git.kernel.org/stable/c/949be4ec5835e0ccb3e2a8ab0e46179cb5512518 https://git.kernel.org/stable/c/61593dc413c3655e4328a351555235bc3089486a https://git.kernel.org/stable/c/5ceac4402f5d975e5a01c806438eb4e554771577 https://access.redhat.com/security/cve/CVE-2024-40927 https://bugzilla.redhat.com/show_bug.cgi?id=2297511 • CWE-820: Missing Synchronization •
CVSS: -EPSS: 0%CPEs: 2EXPL: 0CVE-2024-40926 – drm/nouveau: don't attempt to schedule hpd_work on headless cards
https://notcve.org/view.php?id=CVE-2024-40926
In the Linux kernel, the following vulnerability has been resolved: drm/nouveau: don't attempt to schedule hpd_work on headless cards If the card doesn't have display hardware, hpd_work and hpd_lock are left uninitialized which causes BUG when attempting to schedule hpd_work on runtime PM resume. Fix it by adding headless flag to DRM and skip any hpd if it's set. • https://git.kernel.org/stable/c/ae1aadb1eb8d3cbc52e42bee71d67bd4a71f9f07 https://git.kernel.org/stable/c/227349998e5740f14d531b0f0d704e66b1ed3c2f https://git.kernel.org/stable/c/b96a225377b6602299a03d2ce3c289b68cd41bb7 •
CVSS: 5.5EPSS: 0%CPEs: 3EXPL: 0CVE-2024-40925 – block: fix request.queuelist usage in flush
https://notcve.org/view.php?id=CVE-2024-40925
In the Linux kernel, the following vulnerability has been resolved: block: fix request.queuelist usage in flush Friedrich Weber reported a kernel crash problem and bisected to commit 81ada09cc25e ("blk-flush: reuse rq queuelist in flush state machine"). The root cause is that we use "list_move_tail(&rq->queuelist, pending)" in the PREFLUSH/POSTFLUSH sequences. But rq->queuelist.next == xxx since it's popped out from plug->cached_rq in __blk_mq_alloc_requests_batch(). We don't initialize its queuelist just for this first request, although the queuelist of all later popped requests will be initialized. Fix it by changing to use "list_add_tail(&rq->queuelist, pending)" so rq->queuelist doesn't need to be initialized. It should be ok since rq can't be on any list when PREFLUSH or POSTFLUSH, has no move actually. Please note the commit 81ada09cc25e ("blk-flush: reuse rq queuelist in flush state machine") also has another requirement that no drivers would touch rq->queuelist after blk_mq_end_request() since we will reuse it to add rq to the post-flush pending list in POSTFLUSH. If this is not true, we will have to revert that commit IMHO. This updated version adds "list_del_init(&rq->queuelist)" in flush rq callback since the dm layer may submit request of a weird invalid format (REQ_FSEQ_PREFLUSH | REQ_FSEQ_POSTFLUSH), which causes double list_add if without this "list_del_init(&rq->queuelist)". The weird invalid format problem should be fixed in dm layer. • https://git.kernel.org/stable/c/81ada09cc25e4bf2de7d2951925fb409338a545d https://git.kernel.org/stable/c/fe1e395563ccb051e9dbd8fa99859f5caaad2e71 https://git.kernel.org/stable/c/87907bd69721a8506618a954d41a1de3040e88aa https://git.kernel.org/stable/c/d0321c812d89c5910d8da8e4b10c891c6b96ff70 https://access.redhat.com/security/cve/CVE-2024-40925 https://bugzilla.redhat.com/show_bug.cgi?id=2297509 • CWE-665: Improper Initialization •
CVSS: 4.4EPSS: 0%CPEs: 4EXPL: 0CVE-2024-40924 – drm/i915/dpt: Make DPT object unshrinkable
https://notcve.org/view.php?id=CVE-2024-40924
In the Linux kernel, the following vulnerability has been resolved: drm/i915/dpt: Make DPT object unshrinkable In some scenarios, the DPT object gets shrunk but the actual framebuffer did not and thus its still there on the DPT's vm->bound_list. Then it tries to rewrite the PTEs via a stale CPU mapping. This causes panic. [vsyrjala: Add TODO comment] (cherry picked from commit 51064d471c53dcc8eddd2333c3f1c1d9131ba36c) • https://git.kernel.org/stable/c/0dc987b699ce4266450d407d6d79d41eab88c5d0 https://git.kernel.org/stable/c/327280149066f0e5f2e50356b5823f76dabfe86e https://git.kernel.org/stable/c/7a9883be3b98673333eec65c4a21cc18e60292eb https://git.kernel.org/stable/c/a2552020fb714ff357182c3c179abfac2289f84d https://git.kernel.org/stable/c/43e2b37e2ab660c3565d4cff27922bc70e79c3f1 https://access.redhat.com/security/cve/CVE-2024-40924 https://bugzilla.redhat.com/show_bug.cgi?id=2297508 • CWE-99: Improper Control of Resource Identifiers ('Resource Injection') •