CVE-2021-47322 NFSv4: Fix an Oops in pnfs_mark_request_commit() when doing O_DIRECT

In the Linux kernel, the following vulnerability has been resolved: NFSv4: Fix an Oops in pnfsmarkrequestcommit when doing ODIRECT Fix an Oopsable condition in pnfsmarkrequestcommit when we're putting a set of writes on the commit list to reschedule them after a failed pNFS attempt...

CVE-2021-47321 watchdog: Fix possible use-after-free by calling del_timer_sync()

In the Linux kernel, the following vulnerability has been resolved: watchdog: Fix possible use-after-free by calling deltimersync This driver's remove path calls deltimer. However, that function does not wait until the timer handler finishes. This means that the timer handler may still be running...

CVE-2021-47316 nfsd: fix NULL dereference in nfs3svc_encode_getaclres

In the Linux kernel, the following vulnerability has been resolved: nfsd: fix NULL dereference in nfs3svcencodegetaclres In error cases the dentry may be NULL. Before 20798dfe249a, the encoder also checked dentry and dreallyispositivedentry, but that looks like overkill to me--zero status should ...

CVE-2021-47305

In CVE-2021-47305, the Linux kernel’s dma-buf/sync_file implementation leaks fences on error paths due to missing dma_fence_put() calls when merging fences and in krealloc_array failure. The fix ensures i and the fences array are zero-initialized and that all fences are dma_fence_put() and the fe...

CVE-2021-47303 bpf: Track subprog poke descriptors correctly and fix use-after-free

In the Linux kernel, the following vulnerability has been resolved: bpf: Track subprog poke descriptors correctly and fix use-after-free Subprograms are calling mappoketrack, but on program release there is no hook to call mappokeuntrack. However, on program release, the aux memory and poke...

CVE-2021-47297 net: fix uninit-value in caif_seqpkt_sendmsg

In the Linux kernel, the following vulnerability has been resolved: net: fix uninit-value in caifseqpktsendmsg When nrsegs equal to zero in iovecfromuser, the object msg-msgiter.iov is uninit stack memory in caifseqpktsendmsg which is defined in syssendmsg. So we cann't just judge...

CVE-2021-47297 net: fix uninit-value in caif_seqpkt_sendmsg

In the Linux kernel, the following vulnerability has been resolved: net: fix uninit-value in caifseqpktsendmsg When nrsegs equal to zero in iovecfromuser, the object msg-msgiter.iov is uninit stack memory in caifseqpktsendmsg which is defined in syssendmsg. So we cann't just judge...

CVE-2021-47294 netrom: Decrease sock refcount when sock timers expire

In the Linux kernel, the following vulnerability has been resolved: netrom: Decrease sock refcount when sock timers expire Commit 63346650c1a9 "netrom: switch to sock timer API" switched to use sock timer API. It replaces modtimer by skresettimer, and deltimer by skstoptimer. Function skresettime...

CVE-2021-47266 RDMA/ipoib: Fix warning caused by destroying non-initial netns

In the Linux kernel, the following vulnerability has been resolved: RDMA/ipoib: Fix warning caused by destroying non-initial netns After the commit 5ce2dced8e95 "RDMA/ipoib: Set rtnllinkops for ipoib interfaces", if the IPoIB device is moved to non-initial netns, destroying that netns lets the...

CVE-2021-47261 IB/mlx5: Fix initializing CQ fragments buffer

In the Linux kernel, the following vulnerability has been resolved: IB/mlx5: Fix initializing CQ fragments buffer The function initcqfragbuf can be called to initialize the current CQ fragments buffer cq-buf, or the temporary cq-resizebuf that is filled during CQ resize operation. However, the...

CVE-2021-47261 IB/mlx5: Fix initializing CQ fragments buffer

In the Linux kernel, the following vulnerability has been resolved: IB/mlx5: Fix initializing CQ fragments buffer The function initcqfragbuf can be called to initialize the current CQ fragments buffer cq-buf, or the temporary cq-resizebuf that is filled during CQ resize operation. However, the...

CVE-2021-47255 kvm: LAPIC: Restore guard to prevent illegal APIC register access

In the Linux kernel, the following vulnerability has been resolved: kvm: LAPIC: Restore guard to prevent illegal APIC register access Per the SDM, "any access that touches bytes 4 through 15 of an APIC register may cause undefined behavior and must not be executed." Worse, such an access in...

CVE-2021-47253

CVE-2021-47253 affects the Linux kernel’s DRM/AMD display path, where DMUB hw_init could leak memory on suspend/resume due to kzalloc allocation without guard. The fix ensures the DC wrapper memory is only allocated if it was not previously allocated, avoiding reallocation on suspend/resume. Docu...

CVE-2021-47251 mac80211: fix skb length check in ieee80211_scan_rx()

In the Linux kernel, the following vulnerability has been resolved: mac80211: fix skb length check in ieee80211scanrx Replace hard-coded compile-time constants for header length check with dynamic determination based on the frame type. Otherwise, we hit a validation WARNON in cfg80211 later. styl...

CVE-2021-47249 net: rds: fix memory leak in rds_recvmsg

In the Linux kernel, the following vulnerability has been resolved: net: rds: fix memory leak in rdsrecvmsg Syzbot reported memory leak in rds. The problem was in unputted refcount in case of error. int rdsrecvmsgstruct socket sock, struct msghdr msg, sizet size, int msgflags ... if...

CVE-2021-47250 net: ipv4: fix memory leak in netlbl_cipsov4_add_std

In the Linux kernel, the following vulnerability has been resolved: net: ipv4: fix memory leak in netlblcipsov4addstd Reported by syzkaller: BUG: memory leak unreferenced object 0xffff888105df7000 size 64: comm "syz-executor842", pid 360, jiffies 4294824824 age 22.546s hex dump first 32 bytes: 00...

CVE-2021-47242 mptcp: fix soft lookup in subflow_error_report()

In the Linux kernel, the following vulnerability has been resolved: mptcp: fix soft lookup in subflowerrorreport Maxim reported a soft lookup in subflowerrorreport: watchdog: BUG: soft lockup - CPU0 stuck for 22s! swapper/0:0 RIP: 0010:nativequeuedspinlockslowpath RSP: 0018:ffffa859c0003bc0 EFLAG...

CVE-2021-47226 x86/fpu: Invalidate FPU state after a failed XRSTOR from a user buffer

In the Linux kernel, the following vulnerability has been resolved: x86/fpu: Invalidate FPU state after a failed XRSTOR from a user buffer Both Intel and AMD consider it to be architecturally valid for XRSTOR to fail with PF but nonetheless change the register state. The actual conditions under...

CVE-2024-35884

CVE-2024-35884 highlights a flaw in the Linux kernel's handling of UDP packets when Generic Receive Offload GRO forwarding is enabled. The issue occurs because non-tunnel UDP packets are sometimes mistakenly processed as if they belong to a tunnel. This can lead to data corruption or kernel...

CVE-2024-35996

In the Linux kernel, the following vulnerability has been resolved: cpu: Re-enable CPU mitigations by default for !X86 architectures Rename x86's to CPUMITIGATIONS, define it in generic code, and force it on for all architectures exception x86. A recent commit to turn mitigations off by default i...