CVE-2026-53277

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Take the SRCU lock for page table walks in fault injection and AT emulation walks1 and kvmwalknesteds2 expect to be called while holding kvm-srcu to guard against memslot changes. While this is generally the case,...

UBUNTU-CVE-2026-53277

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Take the SRCU lock for page table walks in fault injection and AT emulation walks1 and kvmwalknesteds2 expect to be called while holding kvm-srcu to guard against memslot changes. While this is generally the case,...

CVE-2026-53277

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Take the SRCU lock for page table walks in fault injection and AT emulation walks1 and kvmwalknesteds2 expect to be called while holding kvm-srcu to guard against memslot changes. While this is generally the case,...

CVE-2026-53277

CVE-2026-53277 – Linux kernel (arm64 KVM) : A flaw where certain page-table walk operations (walk_s1 and kvm_walk_nested_s2) did not acquire the Sleepable RCU lock (SRCU) via kvm->srcu, risking memslot changes and potential instability during fault injection and Address Translation emulation. ...

CVE-2026-53277 KVM: arm64: Take the SRCU lock for page table walks in fault injection and AT emulation

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Take the SRCU lock for page table walks in fault injection and AT emulation walks1 and kvmwalknesteds2 expect to be called while holding kvm-srcu to guard against memslot changes. While this is generally the case,...

EUVD-2026-39228

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Take the SRCU lock for page table walks in fault injection and AT emulation walks1 and kvmwalknesteds2 expect to be called while holding kvm-srcu to guard against memslot changes. While this is generally the case,...

Astra Linux – Vulnerability found in Linux 5.15, Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: Regulator: Core – Fixed a resource leak in regulatorregister. I received some reports of resource leaks during fault injection tests: - ERROR: Memory leak; expected refcount 1 instead of 100. - ofnodeget/ofnodeput is unbalance...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: nullblk: The issue of kmemleak was fixed by releasing references to fault-configfs items. When CONFIGBLKDEVNULLBLKFAULTINJECTION is enabled, the null-blk driver sets up fault injection support by creating configfs items such as...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: f2fs: fixed to avoid potential panic during recovery. During recovery, if FAULTBLOCK is enabled, it is possible that f2fsreservenewblock will return -ENOSPC during recovery, which may trigger a panic. Additionally, if the faul...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: bpf: Fixed an invalid prog-stats access when updateeffectiveprogs fails. The issue occurs due to a fault-injected code sequence in updateeffectiveprogs. The problem can be described as follows: c cgroupbpfdetach...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: ocfs2: removing an entry instead of using null-ptr-dereference in ocfs2xaremove Syzkaller can trigger null-ptr-dereference in ocfs2xaremove: 57.319872 a.out,1161,7:ocfs2xaremove:2028 ERROR: status = -12 57.320420...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, Linux, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: Quota: Fixed a warning in dqgrab. The following issue occurs during fault injection: WARNING: CPU: 1 PID: 14870 at include/linux/quotaops.h:51 dquotdisable+0x13b7/0x18c0 Modules linked in: CPU: 1 PID: 14870 Comm: fsconfig Not...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: f2fs: fixed by removing the unnecessary f2fsbugon function to avoid panics. The verifyblkaddr function will trigger a panic once we introduce a fault into f2fsisvalidblkaddr; this unnecessary f2fsbugon function has been remove...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: thermal/core: A memory leak was fixed in thermalcoolingdeviceregister. I encountered a memory leak during the fault injection test. The unreferenced object is: 0xffff888010080000 size: 264312. The details of the memory leak are a...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: igc: Do not fail igcprobe on LED setup errors When igcledsetup fails, igcprobe fails, leading to a kernel panic in freenetdev. This occurs because unregisternetdev is not called. This behavior can be tested using the...

Astra Linux – Vulnerability found in Linux 5.15, Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: blk-mq: Fixed a possible memory leak when registering the ‘hctx’ variable failed. There is one issue that arises during fault injection tests: An unreferenced object with a size of 512 bytes: bash comm "insmod", pid 308021,...

Astra Linux – Vulnerability found in Linux 5.15, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: chardev: Fixed error handling in cdevdeviceadd. While performing fault injection tests, the following issue was reported: ------------ Cut here ------------ kobject: “null” 0000000039956980: Not initialized, yet kobjectput is bei...

Astra Linux – Vulnerabilities in Linux, Linux-5.10, Linux-5.15, Linux-6.1

In the Linux kernel, the following vulnerability has been resolved: tcpbpf: The function tcpbpfsendverdict fails to allocate psock-cork when called, and skmsgfree must be called instead. The issue was reported by syzbot as follows: 0 The reproduction of the issue involves the following steps: 1...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: nfs: Clean up /proc/net/rpc/nfs when nfsfsprocnetinit fails. The syzbot reported a warning below 1 after a fault injection in nfsfsprocnetinit. 0 When nfsfsprocnetinit fails, /proc/net/rpc/nfs is not removed. Later, rpcprocexit...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: brd: Automatic disk creation is deferred until module initialization succeeds. My colleague Wupeng identified the following issues during fault injection: BUG: Unable to handle page faults for address: fffffbfff809d073 PGD:...