cbcvebase.
CVE-2025-21719
published 2025-02-27

CVE-2025-21719: In the Linux kernel, the following vulnerability has been resolved: ipmr: do not call mr_mfc_uses_dev() for unres entries syzbot found that calling…

PriorityP430high7.1CVSS 3.1
AVLACLPRLUINSUCHINAH
EPSS
0.19%
9.0th percentile
In the Linux kernel, the following vulnerability has been resolved: ipmr: do not call mr_mfc_uses_dev() for unres entries syzbot found that calling mr_mfc_uses_dev() for unres entries would crash [1], because c->mfc_un.res.minvif / c->mfc_un.res.maxvif alias to "struct sk_buff_head unresolved", which contain two pointers. This code never worked, lets remove it. [1] Unable to handle kernel paging request at virtual address ffff5fff2d536613 KASAN: maybe wild-memory-access in range [0xfffefff96a9b3098-0xfffefff96a9b309f] Modules linked in: CPU: 1 UID: 0 PID: 7321 Comm: syz.0.16 Not tainted 6.13.0-rc7-syzkaller-g1950a0af2d55 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : mr_mfc_uses_dev net/ipv4/ipmr_base.c:290 [inline] pc : mr_table_dump+0x5a4/0x8b0 net/ipv4/ipmr_base.c:334 lr : mr_mfc_uses_dev net/ipv4/ipmr_base.c:289 [inline] lr : mr_table_dump+0x694/0x8b0 net/ipv4/ipmr_base.c:334 Call trace: mr_mfc_uses_dev net/ipv4/ipmr_base.c:290 [inline] (P) mr_table_dump+0x5a4/0x8b0 net/ipv4/ipmr_base.c:334 (P) mr_rtm_dumproute+0x254/0x454 net/ipv4/ipmr_base.c:382 ipmr_rtm_dumproute+0x248/0x4b4 net/ipv4/ipmr.c:2648 rtnl_dump_all+0x2e4/0x4e8 net/core/rtnetlink.c:4327 rtnl_dumpit+0x98/0x1d0 net/core/rtnetlink.c:6791 netlink_dump+0x4f0/0xbc0 net/netlink/af_netlink.c:2317 netlink_recvmsg+0x56c/0xe64 net/netlink/af_netlink.c:1973 sock_recvmsg_nosec net/socket.c:1033 [inline] sock_recvmsg net/socket.c:1055 [inline] sock_read_iter+0x2d8/0x40c net/socket.c:1125 new_sync_read fs/read_write.c:484 [inline] vfs_read+0x740/0x970 fs/read_write.c:565 ksys_read+0x15c/0x26c fs/read_write.c:708

Affected

25 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.129-1 (bookworm)linux 6.1.129-1 (bookworm)
debianlinux-6.1< linux 6.1.129-1 (bookworm)linux 6.1.129-1 (bookworm)
linuxlinux
linuxlinux>= cb167893f41e21e6bd283d78e53489289dc0592d < 71a0fcb68c0a5f3ec912b540cd5d72148e6ee5f171a0fcb68c0a5f3ec912b540cd5d72148e6ee5f1
linuxlinux>= cb167893f41e21e6bd283d78e53489289dc0592d < 53df27fd38f84bd3cd6b004eb4ff3c4903114f1d53df27fd38f84bd3cd6b004eb4ff3c4903114f1d
linuxlinux>= cb167893f41e21e6bd283d78e53489289dc0592d < 547ef7e8cbb98f966c8719a3e15d4e078aaa9b47547ef7e8cbb98f966c8719a3e15d4e078aaa9b47
linuxlinux>= cb167893f41e21e6bd283d78e53489289dc0592d < 57177c5f47a8da852f8d76cf6945cf803f8bb9e557177c5f47a8da852f8d76cf6945cf803f8bb9e5
linuxlinux>= cb167893f41e21e6bd283d78e53489289dc0592d < b379b3162ff55a70464c6a934ae9bf0497478a62b379b3162ff55a70464c6a934ae9bf0497478a62
linuxlinux>= cb167893f41e21e6bd283d78e53489289dc0592d < a099834a51ccf9bbba3de86a251b3433539abfdea099834a51ccf9bbba3de86a251b3433539abfde
linuxlinux>= cb167893f41e21e6bd283d78e53489289dc0592d < 26bb7d991f04eeef47dfad23e533834995c26f7a26bb7d991f04eeef47dfad23e533834995c26f7a
linuxlinux>= cb167893f41e21e6bd283d78e53489289dc0592d < 15a901361ec3fb1c393f91880e1cbf24ec0a88bd15a901361ec3fb1c393f91880e1cbf24ec0a88bd
linuxlinux_kernel>= 0 < 5.10.237-15.10.237-1
linuxlinux_kernel>= 0 < 6.1.129-16.1.129-1
linuxlinux_kernel>= 0 < 6.12.13-16.12.13-1
linuxlinux_kernel>= 0 < 6.12.13-16.12.13-1
linuxlinux_kernel>= 0 < 5.4.0-216.2365.4.0-216.236
linuxlinux_kernel>= 0 < 5.15.0-140.1505.15.0-140.150
linuxlinux_kernel>= 0 < 6.8.0-64.676.8.0-64.67
linuxlinux_kernel>= 4.20 < 5.4.2915.4.291
linuxlinux_kernel>= 5.11 < 5.15.1795.15.179
linuxlinux_kernel>= 5.16 < 6.1.1296.1.129
linuxlinux_kernel>= 5.5 < 5.10.2355.10.235
linuxlinux_kernel>= 6.13 < 6.13.26.13.2
linuxlinux_kernel>= 6.2 < 6.6.766.6.76
linuxlinux_kernel>= 6.7 < 6.12.136.12.13

CVSS provenance

nvdv3.17.1HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
osv8.8HIGH
vendor_ubuntu8.8HIGH
vendor_debian7.1HIGH
vendor_redhat7.1HIGH
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