CVE-2021-47349

In the Linux kernel, the following vulnerability has been resolved: mwifiex: bring down link before deleting interface We can deadlock when rmmod'ing the driver or going through firmware reset, because the cfg80211unregisterwdev has to bring down the link for us, ... which then grab the same wiph...

CVE-2021-47366

A flaw was found in the Linux kernel's experimental Andrew File System driver, leading to corruption in reads. This issue could allow a user to read incorrect data if this file system is being used. Mitigation To mitigate this issue, prevent module kafs from being loaded. Please see...

CVE-2021-47358

A use-after-free flaw was in the Linux kernel’s Greybus UART driver when a user held a tty open. This flaw allows a local user to crash the system. Mitigation Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria...

CVE-2021-47357

A use-after-free flaw was found in the Linux kernel’s ATM networking card driver in how a user unloads the driver's module. This flaw allows a local user to crash the system. Mitigation To mitigate this issue, prevent module atm from being loaded. Please see...

CVE-2021-47370

In the Linux kernel, the following vulnerability has been resolved: mptcp: ensure tx skbs always have the MPTCP ext Due to signed/unsigned comparison, the expression: info-sizegoal - skb-len 0 evaluates to true when the size goal is smaller than the skb size. That results in lack of tx cache...

CVE-2021-47378

A vulnerability was found in the Linux kernel's nvme-rdma driver where the driver failed to destroy a component cmid before another component qp was destroyed. This issue occurs when the kernel incorrectly manages memory during RDMA, leading to a potential use-after-free. Mitigation Red Hat has...

systemd-resolved: Unsigned name response in signed zone is not refused when DNSSEC=yes

A vulnerability was found in systemd-resolved. This issue may allow systemd-resolved to accept records of DNSSEC-signed domains even when they have no signature, allowing man-in-the-middles or the upstream DNS resolver to manipulate records...

CVE-2021-47489

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Fix even more out of bound writes from debugfs CVE-2021-42327 was fixed by: commit f23750b5b3d98653b31d4469592935ef6364ad67 Author: Thelford Williams Date: Wed Oct 13 16:04:13 2021 -0400 drm/amdgpu: fix out of bounds...

CVE-2021-47474

In the Linux kernel, the following vulnerability has been resolved: comedi: vmk80xx: fix bulk-buffer overflow The driver is using endpoint-sized buffers but must not assume that the tx and rx buffers are of equal size or a malicious device could overflow the slab-allocated receive buffer when doi...

CVE-2021-47414

In the Linux kernel, the following vulnerability has been resolved: riscv: Flush current cpu icache before other cpus On SiFive Unmatched, I recently fell onto the following BUG when booting: 0.000000 ftrace: allocating 36610 entries in 144 pages 0.000000 Oops - illegal instruction 1 0.000000...

CVE-2021-47430

In the Linux kernel, the following vulnerability has been resolved: x86/entry: Clear X86FEATURESMAP when CONFIGX86SMAP=n Commit 3c73b81a9164 "x86/entry, selftests: Further improve user entry sanity checks" added a warning if AC is set when in the kernel. Commit 662a0221893a3d "x86/entry: Fix AC...

CVE-2021-47427

In the Linux kernel, the following vulnerability has been resolved: scsi: iscsi: Fix iscsitask use after free Commit d39df158518c "scsi: iscsi: Have abort handler get ref to conn" added iscsigetconn/iscsiputconn calls during abort handling but then also changed the handling of the case where we...

CVE-2021-47418

In the Linux kernel, the following vulnerability has been resolved: netsched: fix NULL deref in fifosetlimit syzbot reported another NULL deref in fifosetlimit 1 I could repro the issue with : unshare -n tc qd add dev lo root handle 1:0 tbf limit 200000 burst 70000 rate 100Mbit tc qd replace dev ...

CVE-2021-47497 nvmem: Fix shift-out-of-bound (UBSAN) with byte size cells

In the Linux kernel, the following vulnerability has been resolved: nvmem: Fix shift-out-of-bound UBSAN with byte size cells If a cell has 'nbits' equal to a multiple of BITSPERBYTE the logic p &= GENMASKcell-nbits%BITSPERBYTE - 1, 0; will become undefined behavior because nbits modulo BITSPERBYT...

CVE-2021-47495

CVE-2021-47495 involves the Linux kernel usbnet vulnerability where a zero maxpacket caused an invalid division and a kernel oops. The description notes a sanity check for maxpacket and that a 0 value is nonsensical, leading to a failure to divide by it. The accompanying notes indicate a fix was ...

CVE-2021-47494 cfg80211: fix management registrations locking

In the Linux kernel, the following vulnerability has been resolved: cfg80211: fix management registrations locking The management registrations locking was broken, the list was locked for each wdev, but cfg80211mgmtregistrationsupdate iterated it without holding all the correct spinlocks, causing...

CVE-2021-47492

CVE-2021-47492 concerns a Linux kernel vulnerability in the memory management (mm) subsystem, specifically the THP collapse_file path. The issue arises because collapse_file does not explicitly check PG_writeback and uses page_has_private/try_to_release_page to filter writeback pages. This is pro...

CVE-2021-47489 drm/amdgpu: Fix even more out of bound writes from debugfs

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Fix even more out of bound writes from debugfs CVE-2021-42327 was fixed by: commit f23750b5b3d98653b31d4469592935ef6364ad67 Author: Thelford Williams Date: Wed Oct 13 16:04:13 2021 -0400 drm/amdgpu: fix out of bounds...

CVE-2021-47486

CVE-2021-47486 affects the Linux kernel’s RISC-V BPF JIT: when NR_JIT_ITERATIONS is reached and jit_data->header is NULL, bpf_jit_binary_free() dereferences a NULL and can crash. The fix is a NULL-argument check before calling bpf_jit_binary_free(), per the provided description. Public details...

CVE-2021-47485 IB/qib: Protect from buffer overflow in struct qib_user_sdma_pkt fields

In the Linux kernel, the following vulnerability has been resolved: IB/qib: Protect from buffer overflow in struct qibusersdmapkt fields Overflowing either addrlimit or bytestogo can allow userspace to trigger a buffer overflow of kernel memory. Check for overflows in all the places doing math on...