CVE-2024-26635

In the Linux kernel, the following vulnerability has been resolved: llc: Drop support for ETHPTR8022. syzbot reported an uninit-value bug below. 0 llc supports ETHP8022 0x0004 and used to support ETHPTR8022 0x0011, and syzbot abused the latter to trigger the bug. write$tunr0,...

CVE-2024-26636

In the Linux kernel, the following vulnerability has been resolved: llc: make llcuisendmsg more robust against bonding changes syzbot was able to trick llcuisendmsg, allocating an skb with no headroom, but subsequently trying to push 14 bytes of Ethernet header 1 Like some others, llcuisendmsg...

CVE-2024-26633

In the Linux kernel, the following vulnerability has been resolved: ip6tunnel: fix NEXTHDRFRAGMENT handling in ip6tnlparsetlvenclim syzbot pointed out 1 that NEXTHDRFRAGMENT handling is broken. Reading fragoff can only be done if we pulled enough bytes to skb-head. Currently we might access...

CVE-2024-26631

In the Linux kernel, the following vulnerability has been resolved: ipv6: mcast: fix data-race in ipv6mcdown / mldifcwork idev-mcifccount can be written over without proper locking. Originally found by syzbot 1, fix this issue by encapsulating calls to mldifcstopwork and mldgqstopwork for good...

CVE-2024-26640 tcp: add sanity checks to rx zerocopy

In the Linux kernel, the following vulnerability has been resolved: tcp: add sanity checks to rx zerocopy TCP rx zerocopy intent is to map pages initially allocated from NIC drivers, not pages owned by a fs. This patch adds to canmapfrag these additional checks: - Page must not be a compound one....

CVE-2024-26641 ip6_tunnel: make sure to pull inner header in __ip6_tnl_rcv()

In the Linux kernel, the following vulnerability has been resolved: ip6tunnel: make sure to pull inner header in ip6tnlrcv syzbot found ip6tnlrcv could access unitiliazed data 1. Call pskbinetmaypull to fix this, and initialize ipv6h variable after this call as it can change skb-head. 1 BUG: KMSA...

CVE-2024-26641 ip6_tunnel: make sure to pull inner header in __ip6_tnl_rcv()

In the Linux kernel, the following vulnerability has been resolved: ip6tunnel: make sure to pull inner header in ip6tnlrcv syzbot found ip6tnlrcv could access unitiliazed data 1. Call pskbinetmaypull to fix this, and initialize ipv6h variable after this call as it can change skb-head. 1 BUG: KMSA...

CVE-2024-26640 tcp: add sanity checks to rx zerocopy

In the Linux kernel, the following vulnerability has been resolved: tcp: add sanity checks to rx zerocopy TCP rx zerocopy intent is to map pages initially allocated from NIC drivers, not pages owned by a fs. This patch adds to canmapfrag these additional checks: - Page must not be a compound one....

CVE-2024-26641

CVE-2024-26641 concerns the Linux kernel. The vulnerability arises in ip6_tunnel, where __ip6_tnl_rcv() could access uninitialized data due to not pulling the inner header early enough. The fix, as noted in multiple advisories (e.g., Astra Linux security bulletins), is to call pskb_inet_may_pull(...

CVE-2024-26638 nbd: always initialize struct msghdr completely

In the Linux kernel, the following vulnerability has been resolved: nbd: always initialize struct msghdr completely syzbot complains that msg-msggetinq value can be uninitialized 1 struct msghdr got many new fields recently, we should always make sure their values is zero by default. 1 BUG: KMSAN...

CVE-2024-26638 nbd: always initialize struct msghdr completely

In the Linux kernel, the following vulnerability has been resolved: nbd: always initialize struct msghdr completely syzbot complains that msg-msggetinq value can be uninitialized 1 struct msghdr got many new fields recently, we should always make sure their values is zero by default. 1 BUG: KMSAN...

CVE-2024-26635

CVE-2024-26635 affects the Linux kernel LLС path. The issue arises from legacy support for ETH_P_TR_802_2 in 802.2 LLC handling, where llc_conn_handler/llc_pdu_decode paths initialized saddr/daddr.mac only for ETH_P_802_2, causing reads of garbage in other protocols (e.g., ETH_P_TR_802_2). The bu...

CVE-2024-26635

In the Linux kernel, the following vulnerability has been resolved: llc: Drop support for ETHPTR8022. syzbot reported an uninit-value bug below. 0 llc supports ETHP8022 0x0004 and used to support ETHPTR8022 0x0011, and syzbot abused the latter to trigger the bug. write$tunr0,...

CVE-2024-26636

CVE-2024-26636 : In the Linux kernel, the llc_ui_sendmsg() path could allocate an skb with insufficient headroom and then push an Ethernet header, triggering a bug path when the socket lock is reacquired. The fix reserves space with LL_RESERVED_SPACE(), re-checks all conditions after reacquiring ...

CVE-2024-26635 llc: Drop support for ETH_P_TR_802_2.

In the Linux kernel, the following vulnerability has been resolved: llc: Drop support for ETHPTR8022. syzbot reported an uninit-value bug below. 0 llc supports ETHP8022 0x0004 and used to support ETHPTR8022 0x0011, and syzbot abused the latter to trigger the bug. write$tunr0,...

CVE-2024-26633 ip6_tunnel: fix NEXTHDR_FRAGMENT handling in ip6_tnl_parse_tlv_enc_lim()

In the Linux kernel, the following vulnerability has been resolved: ip6tunnel: fix NEXTHDRFRAGMENT handling in ip6tnlparsetlvenclim syzbot pointed out 1 that NEXTHDRFRAGMENT handling is broken. Reading fragoff can only be done if we pulled enough bytes to skb-head. Currently we might access...

CVE-2024-26633

In the Linux kernel, the following vulnerability has been resolved: ip6tunnel: fix NEXTHDRFRAGMENT handling in ip6tnlparsetlvenclim syzbot pointed out 1 that NEXTHDRFRAGMENT handling is broken. Reading fragoff can only be done if we pulled enough bytes to skb-head. Currently we might access...

CVE-2024-26631 ipv6: mcast: fix data-race in ipv6_mc_down / mld_ifc_work

In the Linux kernel, the following vulnerability has been resolved: ipv6: mcast: fix data-race in ipv6mcdown / mldifcwork idev-mcifccount can be written over without proper locking. Originally found by syzbot 1, fix this issue by encapsulating calls to mldifcstopwork and mldgqstopwork for good...

CVE-2021-47126

In the Linux kernel, the following vulnerability has been resolved: ipv6: Fix KASAN: slab-out-of-bounds Read in fib6nhflushexceptions Reported by syzbot: HEAD commit: 90c911ad Merge tag 'fixes' of git://git.kernel.org/pub/scm.. git tree:...

DEBIAN-CVE-2021-47116

In the Linux kernel, the following vulnerability has been resolved: ext4: fix memory leak in ext4mbinitbackend on error path. Fix a memory leak discovered by syzbot when a file system is corrupted with an illegally large sloggroupsperflex...