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: scsi: Reverted “scsi: qla2xxx: Perform lockless command completion in abort path”. This revertment is associated with commit 0367076b0817d5c75dfb83001ce7ce5c64d803a9. The committed code added code to qla2x00abortallcmds to call...

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

In the Linux kernel, the following vulnerability has been resolved: ext4: Fixed a bug in ext4mbnew inodepa due to overflow. When calculating the end position of ext4freeextent, this position might be exactly where ext4lblkt i.e., uint overflows. For example, if acgex.felogical is 4294965248 and...

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

In the Linux kernel, the following vulnerabilities have been resolved: ext4: Fixed another “off-by-one” issue with the fsmap for 1k-block file systems. It seems that syzbot discovered that issuing the FSMAP call as follows: c struct fsmaphead cmd = .fmhcount = ...; .fmhkeys = .fmrdevice = / ext4...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: ATA: libata-transport: fixed the double call to atahostput in atatportadd In the error path in atatportadd, when calling putdevice, atatportrelease is called. This function decreases the refcount of ‘ap-host’. Then, atahostput is...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: cifs: A use-after-free bug has been fixed in refreshcacheworker. The UAF bug occurred because we were putting DFS root sessions into cifsumount while the DFS cache refresher was executing. We have ensured that DFS root session...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: usb: dwc2: Fixed a device leak in hwenable upon suspend/resume. Every time the platform enters low-power mode, the PM suspend/resume routines call dwc2lowlevelhwenable - devmaddactionorreset. This adds a new device entry each...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: bpf: Fixed pointer-leak due to insufficient speculative store bypass mitigation To mitigate Spectre v4, the patch 2039f26f3aca “bpf: Fixed leakage due to insufficient speculative store bypass mitigation” includes instructions...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: net: dsa: mv88e6xxx: Do not use devres for mdiobus As explained in the commits: 74b6d7d13307 “net: dsa: realtek: Register the MDIO bus under devres” 5135e96a3dd2 “net: dsa: Do not allocate the slavemiibus using devres” The...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: Network layer: Do not leave a dangling “sk” pointer when socket creation fails. It is possible to trigger a use-after-free by: - Attaching a “fentry” probe to sockrelease and the probe that calls bpfgetsocketcookie; - Running...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: iommu: Fixed potential use-after-free during probe KASAN has reported the following use-after-free in dev-iommu: When a device probe fails and the dev-iommu is being freed. In the deviommufree function, deferredprobeworkfunc...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: Platform/x86: ISST: Fixed the KASAN report “slab-out-of-bounds” bug. Attaching an SST PCI device to a virtual machine causes the issue “BUG: KASAN: slab-out-of-bounds”. Kasan report: 19.411889...

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: smb: client: fixed UAF in async decryption Performing async decryption large read results in a crash due to a slabuseafterfree issue in the crypto API. Reproducing the issue: mount.cifs -o ...,seal,esize=1 //srv/share /mnt dd...

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

In the Linux kernel, the following vulnerability has been resolved: net/sched: accept TCASTAB only for root qdisc Most qdiscs maintain their backlog using qdiscpktlenskb on the assumption it is invariant between the enqueue and dequeue handlers. Unfortunately syzbot can crash a host rather easily...

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

In the Linux kernel, the following vulnerability has been resolved: net: tun: Fix use-after-free in tundetach Syzbot reported a use-after-free in tundetach. This causes a call trace like the following: ================================================================== BUG: KASAN: use-after-free i...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: Input: raydiumtsi2c – fixed a memory leak in raydiumi2csend A kmemleak occurs when testing raydiumi2cts using the bpf mock device: Unreferenced object 0xffff88812d3675a0 size 8: Comm “python3”, PID 349, Jiffies 4294741067 Age...

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

In the Linux kernel, the following vulnerabilities have been resolved: jfs: Fixed a UAF in dbFreeBits Reported by syzbot ERROR: KASAN: Slab-use-after-free in mutexlockcommon in kernel/locking/mutex.c:587 inline ERROR: KASAN: Slab-use-after-free in mutexlock+0xfe/0xd70 in kernel/locking/mutex.c:75...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: ipv6: avoided use-after-free in ip6fragment The blamed commit claimed that rcureadlock was held by the callers of ip6fragment. It seems not to always be true, at least for the UDP stack. syzbot reported: BUG: KASAN:...

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

In the Linux kernel, the following vulnerabilities have been resolved: spi: nxp-fspi: fixed the KASAN out-of-bounds bug The length of the memcpy operation was changed to address the out-of-bounds issue when writing data that is not 4-byte aligned to the TX FIFO. To reproduce the issue, 3 bytes of...

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

In the Linux kernel, the following vulnerability has been resolved: ext4: checks dot and dotdot of dxroot before making dir indexed Syzbot reports the following issue: ============================================ BUG: Unable to handle page fault for address: ffffed11022e24fe PGD 23ffee067 P4D...

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

In the Linux kernel, the following vulnerabilities have been resolved: bna: Adjust the ‘name’ buffer size of bnatcb and bnaccb structures. To ensure there is enough space to store all possible arguments for sprintf. Currently, the ‘name’ size is 16 characters, but the first '%s' specifier may...