CVSS: -EPSS: 0%CPEs: 8EXPL: 0CVE-2024-56756 – nvme-pci: fix freeing of the HMB descriptor table
https://notcve.org/view.php?id=CVE-2024-56756
In the Linux kernel, the following vulnerability has been resolved: nvme-pci: fix freeing of the HMB descriptor table The HMB descriptor table is sized to the maximum number of descriptors that could be used for a given device, but __nvme_alloc_host_mem could break out of the loop earlier on memory allocation failure and end up using less descriptors than planned for, which leads to an incorrect size passed to dma_free_coherent. In practice this was not showing up because the number of descriptors tends to be low and the dma coherent allocator always allocates and frees at least a page. • https://git.kernel.org/stable/c/87ad72a59a38d1df217cfd95bc222a2edfe5d399 https://git.kernel.org/stable/c/ac22240540e0c5230d8c4138e3778420b712716a https://git.kernel.org/stable/c/452f9ddd12bebc04cef741e8ba3806bf0e1fd015 https://git.kernel.org/stable/c/869cf50b9c9d1059f5223f79ef68fc0bc6210095 https://git.kernel.org/stable/c/fb96d5cfa97a7363245b3dd523f475b04296d87b https://git.kernel.org/stable/c/cee3bff51a35cab1c5d842d409a7b11caefe2386 https://git.kernel.org/stable/c/6d0f599db73b099aa724a12736369c4d4d92849d https://git.kernel.org/stable/c/582d9ed999b004fb1d415ecbfa86d4d8d •
CVSS: -EPSS: 0%CPEs: 5EXPL: 0CVE-2024-56755 – netfs/fscache: Add a memory barrier for FSCACHE_VOLUME_CREATING
https://notcve.org/view.php?id=CVE-2024-56755
In the Linux kernel, the following vulnerability has been resolved: netfs/fscache: Add a memory barrier for FSCACHE_VOLUME_CREATING In fscache_create_volume(), there is a missing memory barrier between the bit-clearing operation and the wake-up operation. This may cause a situation where, after a wake-up, the bit-clearing operation hasn't been detected yet, leading to an indefinite wait. The triggering process is as follows: [cookie1] [cookie2] [volume_work] fscache_perform_lookup fscache_create_volume fscache_perform_lookup fscache_create_volume fscache_create_volume_work cachefiles_acquire_volume clear_and_wake_up_bit test_and_set_bit test_and_set_bit goto maybe_wait goto no_wait In the above process, cookie1 and cookie2 has the same volume. When cookie1 enters the -no_wait- process, it will clear the bit and wake up the waiting process. If a barrier is missing, it may cause cookie2 to remain in the -wait- process indefinitely. In commit 3288666c7256 ("fscache: Use clear_and_wake_up_bit() in fscache_create_volume_work()"), barriers were added to similar operations in fscache_create_volume_work(), but fscache_create_volume() was missed. By combining the clear and wake operations into clear_and_wake_up_bit() to fix this issue. • https://git.kernel.org/stable/c/bfa22da3ed652aa15acd4246fa13a0de6dbe4a59 https://git.kernel.org/stable/c/ddab02607eed9e415dc62fde421d4329e5345315 https://git.kernel.org/stable/c/539fabba965e119b98066fc6ba5257b5eaf4eda2 https://git.kernel.org/stable/c/8beb682cc9a0798a280bbb95e3e41617237090b2 https://git.kernel.org/stable/c/8cc1df3113cb71a0df2c46dd5b102c9e11c8a8c6 https://git.kernel.org/stable/c/22f9400a6f3560629478e0a64247b8fcc811a24d •
CVSS: -EPSS: 0%CPEs: 7EXPL: 0CVE-2024-56754 – crypto: caam - Fix the pointer passed to caam_qi_shutdown()
https://notcve.org/view.php?id=CVE-2024-56754
In the Linux kernel, the following vulnerability has been resolved: crypto: caam - Fix the pointer passed to caam_qi_shutdown() The type of the last parameter given to devm_add_action_or_reset() is "struct caam_drv_private *", but in caam_qi_shutdown(), it is casted to "struct device *". Pass the correct parameter to devm_add_action_or_reset() so that the resources are released as expected. • https://git.kernel.org/stable/c/f414de2e2fffd89c8a4e5b5e06b0eba5f9d8b1eb https://git.kernel.org/stable/c/cc386170b3312fd7b5bc4a69a9f52d7f50814526 https://git.kernel.org/stable/c/6187727e57aec122c8a99c464c74578c810cbe40 https://git.kernel.org/stable/c/66eddb8dcb61065c53098510165f14b54232bcc2 https://git.kernel.org/stable/c/1f8e2f597b918ca5827a5c6d00b819d064264d1c https://git.kernel.org/stable/c/84a185aea7b83f620699de0ea36907d588d89cf6 https://git.kernel.org/stable/c/ad39df0898d3f469776c19d99229be055cc2dcea https://git.kernel.org/stable/c/ad980b04f51f7fb503530bd1cb328ba5e •
CVSS: -EPSS: 0%CPEs: 4EXPL: 0CVE-2024-56752 – drm/nouveau/gr/gf100: Fix missing unlock in gf100_gr_chan_new()
https://notcve.org/view.php?id=CVE-2024-56752
In the Linux kernel, the following vulnerability has been resolved: drm/nouveau/gr/gf100: Fix missing unlock in gf100_gr_chan_new() When the call to gf100_grctx_generate() fails, unlock gr->fecs.mutex before returning the error. Fixes smatch warning: drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c:480 gf100_gr_chan_new() warn: inconsistent returns '&gr->fecs.mutex'. • https://git.kernel.org/stable/c/ca081fff6ecc63c86a99918230cc9b947bebae8a https://git.kernel.org/stable/c/237f2dbfa00576bb1aa8dc2dce403c64e53270e6 https://git.kernel.org/stable/c/22b4a623c0f230540f02f4358744cce62ae12dbf https://git.kernel.org/stable/c/24b1df744ef444f9846f52de4985790a5fd1c0de https://git.kernel.org/stable/c/a2f599046c671d6b46d93aed95b37241ce4504cf •
CVSS: -EPSS: 0%CPEs: 5EXPL: 0CVE-2024-56751 – ipv6: release nexthop on device removal
https://notcve.org/view.php?id=CVE-2024-56751
In the Linux kernel, the following vulnerability has been resolved: ipv6: release nexthop on device removal The CI is hitting some aperiodic hangup at device removal time in the pmtu.sh self-test: unregister_netdevice: waiting for veth_A-R1 to become free. Usage count = 6 ref_tracker: veth_A-R1@ffff888013df15d8 has 1/5 users at dst_init+0x84/0x4a0 dst_alloc+0x97/0x150 ip6_dst_alloc+0x23/0x90 ip6_rt_pcpu_alloc+0x1e6/0x520 ip6_pol_route+0x56f/0x840 fib6_rule_lookup+0x334/0x630 ip6_route_output_flags+0x259/0x480 ip6_dst_lookup_tail.constprop.0+0x5c2/0x940 ip6_dst_lookup_flow+0x88/0x190 udp_tunnel6_dst_lookup+0x2a7/0x4c0 vxlan_xmit_one+0xbde/0x4a50 [vxlan] vxlan_xmit+0x9ad/0xf20 [vxlan] dev_hard_start_xmit+0x10e/0x360 __dev_queue_xmit+0xf95/0x18c0 arp_solicit+0x4a2/0xe00 neigh_probe+0xaa/0xf0 While the first suspect is the dst_cache, explicitly tracking the dst owing the last device reference via probes proved such dst is held by the nexthop in the originating fib6_info. Similar to commit f5b51fe804ec ("ipv6: route: purge exception on removal"), we need to explicitly release the originating fib info when disconnecting a to-be-removed device from a live ipv6 dst: move the fib6_info cleanup into ip6_dst_ifdown(). Tested running: ./pmtu.sh cleanup_ipv6_exception in a tight loop for more than 400 iterations with no spat, running an unpatched kernel I observed a splat every ~10 iterations. • https://git.kernel.org/stable/c/f88d8ea67fbdbac7a64bfa6ed9a2ba27bb822f74 https://git.kernel.org/stable/c/b2f26a27ea3f72f75d18330f76f5d1007c791848 https://git.kernel.org/stable/c/43e25adc80269f917d2a195f0d59f74cdd182955 https://git.kernel.org/stable/c/a3c3f8a4d025acc8c857246ec2b812c59102487a https://git.kernel.org/stable/c/0e4c6faaef8a24b762a24ffb767280e263ef8e10 https://git.kernel.org/stable/c/eb02688c5c45c3e7af7e71f036a7144f5639cbfe •