{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2022-48839","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-07-16T11:38:08.909Z","datePublished":"2024-07-16T12:25:10.521Z","dateUpdated":"2025-05-04T08:24:29.153Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-05-04T08:24:29.153Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/packet: fix slab-out-of-bounds access in packet_recvmsg()\n\nsyzbot found that when an AF_PACKET socket is using PACKET_COPY_THRESH\nand mmap operations, tpacket_rcv() is queueing skbs with\ngarbage in skb->cb[], triggering a too big copy [1]\n\nPresumably, users of af_packet using mmap() already gets correct\nmetadata from the mapped buffer, we can simply make sure\nto clear 12 bytes that might be copied to user space later.\n\nBUG: KASAN: stack-out-of-bounds in memcpy include/linux/fortify-string.h:225 [inline]\nBUG: KASAN: stack-out-of-bounds in packet_recvmsg+0x56c/0x1150 net/packet/af_packet.c:3489\nWrite of size 165 at addr ffffc9000385fb78 by task syz-executor233/3631\n\nCPU: 0 PID: 3631 Comm: syz-executor233 Not tainted 5.17.0-rc7-syzkaller-02396-g0b3660695e80 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011\nCall Trace:\n <TASK>\n __dump_stack lib/dump_stack.c:88 [inline]\n dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106\n print_address_description.constprop.0.cold+0xf/0x336 mm/kasan/report.c:255\n __kasan_report mm/kasan/report.c:442 [inline]\n kasan_report.cold+0x83/0xdf mm/kasan/report.c:459\n check_region_inline mm/kasan/generic.c:183 [inline]\n kasan_check_range+0x13d/0x180 mm/kasan/generic.c:189\n memcpy+0x39/0x60 mm/kasan/shadow.c:66\n memcpy include/linux/fortify-string.h:225 [inline]\n packet_recvmsg+0x56c/0x1150 net/packet/af_packet.c:3489\n sock_recvmsg_nosec net/socket.c:948 [inline]\n sock_recvmsg net/socket.c:966 [inline]\n sock_recvmsg net/socket.c:962 [inline]\n ____sys_recvmsg+0x2c4/0x600 net/socket.c:2632\n ___sys_recvmsg+0x127/0x200 net/socket.c:2674\n __sys_recvmsg+0xe2/0x1a0 net/socket.c:2704\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x44/0xae\nRIP: 0033:0x7fdfd5954c29\nCode: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007ffcf8e71e48 EFLAGS: 00000246 ORIG_RAX: 000000000000002f\nRAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fdfd5954c29\nRDX: 0000000000000000 RSI: 0000000020000500 RDI: 0000000000000005\nRBP: 0000000000000000 R08: 000000000000000d R09: 000000000000000d\nR10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcf8e71e60\nR13: 00000000000f4240 R14: 000000000000c1ff R15: 00007ffcf8e71e54\n </TASK>\n\naddr ffffc9000385fb78 is located in stack of task syz-executor233/3631 at offset 32 in frame:\n ____sys_recvmsg+0x0/0x600 include/linux/uio.h:246\n\nthis frame has 1 object:\n [32, 160) 'addr'\n\nMemory state around the buggy address:\n ffffc9000385fa80: 00 04 f3 f3 f3 f3 f3 00 00 00 00 00 00 00 00 00\n ffffc9000385fb00: 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00\n>ffffc9000385fb80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f3\n                                                                ^\n ffffc9000385fc00: f3 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00 f1\n ffffc9000385fc80: f1 f1 f1 00 f2 f2 f2 00 f2 f2 f2 00 00 00 00 00\n=================================================================="}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/packet/af_packet.c"],"versions":[{"version":"0fb375fb9b93b7d822debc6a734052337ccfdb1f","lessThan":"b9d5772d60f8e7ef34e290f72fc20e3a4883e7d0","status":"affected","versionType":"git"},{"version":"0fb375fb9b93b7d822debc6a734052337ccfdb1f","lessThan":"b1e27cda1e3c12b705875bb7e247a97168580e33","status":"affected","versionType":"git"},{"version":"0fb375fb9b93b7d822debc6a734052337ccfdb1f","lessThan":"a33dd1e6693f80d805155b3f69c18c2f642915da","status":"affected","versionType":"git"},{"version":"0fb375fb9b93b7d822debc6a734052337ccfdb1f","lessThan":"268dcf1f7b3193bc446ec3d14e08a240e9561e4d","status":"affected","versionType":"git"},{"version":"0fb375fb9b93b7d822debc6a734052337ccfdb1f","lessThan":"70b7b3c055fd4a464da8da55ff4c1f84269f9b02","status":"affected","versionType":"git"},{"version":"0fb375fb9b93b7d822debc6a734052337ccfdb1f","lessThan":"a055f5f2841f7522b44a2b1eccb1951b4b03d51a","status":"affected","versionType":"git"},{"version":"0fb375fb9b93b7d822debc6a734052337ccfdb1f","lessThan":"ef591b35176029fdefea38e8388ffa371e18f4b2","status":"affected","versionType":"git"},{"version":"0fb375fb9b93b7d822debc6a734052337ccfdb1f","lessThan":"c700525fcc06b05adfea78039de02628af79e07a","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/packet/af_packet.c"],"versions":[{"version":"2.6.14","status":"affected"},{"version":"0","lessThan":"2.6.14","status":"unaffected","versionType":"semver"},{"version":"4.9.308","lessThanOrEqual":"4.9.*","status":"unaffected","versionType":"semver"},{"version":"4.14.273","lessThanOrEqual":"4.14.*","status":"unaffected","versionType":"semver"},{"version":"4.19.236","lessThanOrEqual":"4.19.*","status":"unaffected","versionType":"semver"},{"version":"5.4.187","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.108","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.31","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"5.16.17","lessThanOrEqual":"5.16.*","status":"unaffected","versionType":"semver"},{"version":"5.17","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.14","versionEndExcluding":"4.9.308"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.14","versionEndExcluding":"4.14.273"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.14","versionEndExcluding":"4.19.236"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.14","versionEndExcluding":"5.4.187"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.14","versionEndExcluding":"5.10.108"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.14","versionEndExcluding":"5.15.31"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.14","versionEndExcluding":"5.16.17"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.14","versionEndExcluding":"5.17"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/b9d5772d60f8e7ef34e290f72fc20e3a4883e7d0"},{"url":"https://git.kernel.org/stable/c/b1e27cda1e3c12b705875bb7e247a97168580e33"},{"url":"https://git.kernel.org/stable/c/a33dd1e6693f80d805155b3f69c18c2f642915da"},{"url":"https://git.kernel.org/stable/c/268dcf1f7b3193bc446ec3d14e08a240e9561e4d"},{"url":"https://git.kernel.org/stable/c/70b7b3c055fd4a464da8da55ff4c1f84269f9b02"},{"url":"https://git.kernel.org/stable/c/a055f5f2841f7522b44a2b1eccb1951b4b03d51a"},{"url":"https://git.kernel.org/stable/c/ef591b35176029fdefea38e8388ffa371e18f4b2"},{"url":"https://git.kernel.org/stable/c/c700525fcc06b05adfea78039de02628af79e07a"}],"title":"net/packet: 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