UBUNTU-CVE-2022-49352

In the Linux kernel, the following vulnerability has been resolved: ext4: fix warning in ext4handleinodeextension We got issue as follows: EXT4-fs error device loop0 in ext4reserveinodewrite:5741: Out of memory EXT4-fs error device loop0: ext4setattr:5462: inode 13: comm syz-executor.0:...

CVE-2024-41041 udp: Set SOCK_RCU_FREE earlier in udp_lib_get_port().

In the Linux kernel, the following vulnerability has been resolved: udp: Set SOCKRCUFREE earlier in udplibgetport. syzkaller triggered the warning 0 in udpv4earlydemux. In udpv46earlydemux and sklookup, we do not touch the refcount of the looked-up sk and use sockpfree as skb-destructor, so we...

CVE-2024-36901 ipv6: prevent NULL dereference in ip6_output()

In the Linux kernel, the following vulnerability has been resolved: ipv6: prevent NULL dereference in ip6output According to syzbot, there is a chance that ip6dstidev returns NULL in ip6output. Most places in IPv6 stack deal with a NULL idev just fine, but not here. syzbot reported: general...

CVE-2023-52778 mptcp: deal with large GSO size

In the Linux kernel, the following vulnerability has been resolved: mptcp: deal with large GSO size After the blamed commit below, the TCP sockets and the MPTCP subflows can build egress packets larger than 64K. That exceeds the maximum DSS data size, the length being misrepresent on the wire and...

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-2024-35934

In the Linux kernel, the following vulnerability has been resolved: net/smc: reduce rtnl pressure in smcpnetcreatepnetidslist Many syzbot reports show extreme rtnl pressure, and many of them hint that smc acquires rtnl in netns creation for no good reason 1 This patch returns early from...

CVE-2024-26852 net/ipv6: avoid possible UAF in ip6_route_mpath_notify()

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-2021-47219 scsi: scsi_debug: Fix out-of-bound read in resp_report_tgtpgs()

In the Linux kernel, the following vulnerability has been resolved: scsi: scsidebug: Fix out-of-bound read in respreporttgtpgs The following issue was observed running syzkaller: BUG: KASAN: slab-out-of-bounds in memcpy include/linux/string.h:377 inline BUG: KASAN: slab-out-of-bounds in...

Unsupervised Coverage-Guided Kernel Fuzzer: syzkaller

syzkaller is an unsupervised coverage-guided kernel fuzzer. Linux kernel fuzzing has the most support, akaros, freebsd, fuchsia, netbsd and windows are supported to varying degrees. Initially, syzkaller was developed with Linux kernel fuzzing in mind, but now it’s being extended to support other ...