CVE-2024-35896

In the Linux kernel, the following vulnerability has been resolved: netfilter: validate user input for expected length I got multiple syzbot reports showing old bugs exposed by BPF after commit 20f2505fb436 "bpf: Try to avoid kzalloc in cgroup/s,getsockopt" setsockopt @optlen argument should be...

CVE-2024-35892

CVE-2024-35892 stems from a Linux kernel net/sched issue where qdisc_tree_reduce_backlog() was called with the qdisc lock held while RTNL was not held, triggering a lockdep splat due to unsafe RCU usage. The fix switches from qdisc_lookup() to qdisc_lookup_rcu() to safely dereference qdisc data u...

Ubuntu 18.04 LTS / 20.04 LTS : Linux kernel vulnerabilities (USN-6767-1)

The remote Ubuntu 18.04 LTS / 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6767-1 advisory. Chenyuan Yang discovered that the RDS Protocol implementation in the Linux kernel contained an out-of- bounds read vulnerability. An attacker...

CVE-2022-48689

CVE-2022-48689 pertains to a Linux kernel issue in TCP zerocopy where pfmemalloc status could be misinterpreted by page_is_pfmemalloc() in certain paths. The Astra Linux note confirms the advisory and reiterates the same vulnerability in the kernel and notes a prereq backport: 84ce071e38a6 (net: ...

CVE-2022-48689 tcp: TX zerocopy should not sense pfmemalloc status

In the Linux kernel, the following vulnerability has been resolved: tcp: TX zerocopy should not sense pfmemalloc status We got a recent syzbot report 1 showing a possible misuse of pfmemalloc page status in TCP zerocopy paths. Indeed, for pages coming from user space or other layers, using...

CVE-2024-27070

Summary (CVE-2024-27070): The Linux kernel f2fs subsystem is affected by a use-after-free in f2fs_filemap_fault. The root cause is that vmf->vma may be not alive after filemap_fault(), causing an invalid access to vmf->vma->vm_flags in trace_f2fs_filemap_fault. The fix is to keep vm_flag...

CVE-2024-27070 f2fs: fix to avoid use-after-free issue in f2fs_filemap_fault

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to avoid use-after-free issue in f2fsfilemapfault syzbot reports a f2fs bug as below: BUG: KASAN: slab-use-after-free in f2fsfilemapfault+0xd1/0x2c0 fs/f2fs/file.c:49 Read of size 8 at addr ffff88807bb22680 by task...

CVE-2024-27070 f2fs: fix to avoid use-after-free issue in f2fs_filemap_fault

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to avoid use-after-free issue in f2fsfilemapfault syzbot reports a f2fs bug as below: BUG: KASAN: slab-use-after-free in f2fsfilemapfault+0xd1/0x2c0 fs/f2fs/file.c:49 Read of size 8 at addr ffff88807bb22680 by task...

USN-6746-1: Google Guest Agent and Google OS Config Agent vulnerability

It was discovered that Google Guest Agent and Google OS Config Agent incorrectly handled certain JSON files. An attacker could possibly use this issue to cause a denial of service...

CVE-2024-26862

In the Linux kernel, the following vulnerability has been resolved: packet: annotate data-races around ignoreoutgoing ignoreoutgoing is read locklessly from devqueuexmitnit and packetgetsockopt Add appropriate READONCE/WRITEONCE annotations. syzbot reported: BUG: KCSAN: data-race in devqueuexmitn...

CVE-2024-26875

In the Linux kernel, the following vulnerability has been resolved: media: pvrusb2: fix uaf in pvr2contextsetnotify Syzbot reported BUG: KASAN: slab-use-after-free in pvr2contextsetnotify+0x2c4/0x310 drivers/media/usb/pvrusb2/pvrusb2-context.c:35 Read of size 4 at addr ffff888113aeb0d8 by task...

CVE-2024-26862

In the Linux kernel, the following vulnerability has been resolved: packet: annotate data-races around ignoreoutgoing ignoreoutgoing is read locklessly from devqueuexmitnit and packetgetsockopt Add appropriate READONCE/WRITEONCE annotations. syzbot reported: BUG: KCSAN: data-race in devqueuexmitn...

CVE-2024-26852

In the Linux kernel, the following vulnerability has been resolved: net/ipv6: avoid possible UAF in ip6routempathnotify syzbot found another use-after-free in ip6routempathnotify 1 Commit f7225172f25a "net/ipv6: prevent use after free in ip6routempathnotify" was not able to fix the root cause. We...

CVE-2024-26864

In the Linux kernel, the following vulnerability has been resolved: tcp: Fix refcnt handling in inethashconnect. syzbot reported a warning in sknullsdelnodeinitrcu. The commit 66b60b0c8c4a "dccp/tcp: Unhash sk from ehash for tb2 alloc failure after checkestalblished." tried to fix an issue that a...

CVE-2024-26875

In the Linux kernel, the following vulnerability has been resolved: media: pvrusb2: fix uaf in pvr2contextsetnotify Syzbot reported BUG: KASAN: slab-use-after-free in pvr2contextsetnotify+0x2c4/0x310 drivers/media/usb/pvrusb2/pvrusb2-context.c:35 Read of size 4 at addr ffff888113aeb0d8 by task...

CVE-2024-26852

In the Linux kernel, the following vulnerability has been resolved: net/ipv6: avoid possible UAF in ip6routempathnotify syzbot found another use-after-free in ip6routempathnotify 1 Commit f7225172f25a "net/ipv6: prevent use after free in ip6routempathnotify" was not able to fix the root cause. We...

CVE-2024-26875 media: pvrusb2: fix uaf in pvr2_context_set_notify

In the Linux kernel, the following vulnerability has been resolved: media: pvrusb2: fix uaf in pvr2contextsetnotify Syzbot reported BUG: KASAN: slab-use-after-free in pvr2contextsetnotify+0x2c4/0x310 drivers/media/usb/pvrusb2/pvrusb2-context.c:35 Read of size 4 at addr ffff888113aeb0d8 by task...

CVE-2024-26862 packet: annotate data-races around ignore_outgoing

In the Linux kernel, the following vulnerability has been resolved: packet: annotate data-races around ignoreoutgoing ignoreoutgoing is read locklessly from devqueuexmitnit and packetgetsockopt Add appropriate READONCE/WRITEONCE annotations. syzbot reported: BUG: KCSAN: data-race in devqueuexmitn...

CVE-2024-26862 packet: annotate data-races around ignore_outgoing

In the Linux kernel, the following vulnerability has been resolved: packet: annotate data-races around ignoreoutgoing ignoreoutgoing is read locklessly from devqueuexmitnit and packetgetsockopt Add appropriate READONCE/WRITEONCE annotations. syzbot reported: BUG: KCSAN: data-race in devqueuexmitn...

CVE-2024-26862 packet: annotate data-races around ignore_outgoing

In the Linux kernel, the following vulnerability has been resolved: packet: annotate data-races around ignoreoutgoing ignoreoutgoing is read locklessly from devqueuexmitnit and packetgetsockopt Add appropriate READONCE/WRITEONCE annotations. syzbot reported: BUG: KCSAN: data-race in devqueuexmitn...