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CVE PROGRAM SOURCE RECORD7.5 High

CVE-2022-50365

skbuff: Account for tail adjustment during pull operations

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: skbuff: Account for tail adjustment during pull operations Extending the tail can have some unexpected side effects if a program uses a helper like BPF_FUNC_skb_pull_data to read partial content beyond the head skb headlen when all the skbs in the gso frag_list are linear with no head_frag - kernel BUG at net/core/skbuff.c:4219! pc : skb_segment+0xcf4/0xd2c lr : skb_segment+0x63c/0xd2c Call trace: skb_segment+0xcf4/0xd2c __udp_gso_segment+0xa4/0x544 udp4_ufo_fragment+0x184/0x1c0 inet_gso_segment+0x16c/0x3a4 skb_mac_gso_segment+0xd4/0x1b0 __skb_gso_segment+0xcc/0x12c udp_rcv_segment+0x54/0x16c udp_queue_rcv_skb+0x78/0x144 udp_unicast_rcv_skb+0x8c/0xa4 __udp4_lib_rcv+0x490/0x68c udp_rcv+0x20/0x30 ip_protocol_deliver_rcu+0x1b0/0x33c ip_local_deliver+0xd8/0x1f0 ip_rcv+0x98/0x1a4 deliver_ptype_list_skb+0x98/0x1ec __netif_receive_skb_core+0x978/0xc60 Fix this by marking these skbs as GSO_DODGY so segmentation can handle the tail updates accordingly.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 162a5a8c3aff15c449e6b38355cdf80ab4f77a5a to < ff3743d00f41d803e6ab9334962b674f3b7fd0cbaffected
  • 55fb612bef7fd237fb70068e2b6ff1cd1543a8ef to < 6ac417d71b80e74b002313fcd73f7e9008e8e457affected
  • 821302dd0c51d29269ef73a595bdff294419e2cd to < 2d59f0ca153e9573ec4f140988c0ccca0eb4181baffected
  • 3dcbdb134f329842a38f0e6797191b885ab00a00 to < 668dc454bcbd1da73605201ff43f988c70848215affected
  • 3dcbdb134f329842a38f0e6797191b885ab00a00 to < 821be5a5ab09a40ba09cb5ba354f18cf7996fea0affected
  • 3dcbdb134f329842a38f0e6797191b885ab00a00 to < 8fb773eed4909ef5dc1bbeb3629a337d3336df7eaffected
  • 3dcbdb134f329842a38f0e6797191b885ab00a00 to < 946dd5dc4fcc4123cdfe3942b20012c4448cf89aaffected
  • 3dcbdb134f329842a38f0e6797191b885ab00a00 to < 331615d837f4979eb91a336a223a5c7f7886ecd5affected
  • 3dcbdb134f329842a38f0e6797191b885ab00a00 to < 2d7afdcbc9d32423f177ee12b7c93783aea338fbaffected
  • 92984818ff8cfd97311a5e0ac27f148a00df2b54affected
  • 4.9.194 to < 4.9.337affected
  • 4.14.145 to < 4.14.303affected
  • 4.19.74 to < 4.19.270affected
  • 5.2.16 to < 5.3affected

Linux Linux

Default version status: affected

  • 5.3affected
  • 0 to < 5.3unaffected
  • 4.9.337 to ≤ 4.9.*unaffected
  • 4.14.303 to ≤ 4.14.*unaffected
  • 4.19.270 to ≤ 4.19.*unaffected
  • 5.4.229 to ≤ 5.4.*unaffected
  • 5.10.163 to ≤ 5.10.*unaffected
  • 5.15.86 to ≤ 5.15.*unaffected
  • 6.0.16 to ≤ 6.0.*unaffected
  • 6.1.2 to ≤ 6.1.*unaffected
  • 6.2 to ≤ *unaffected

References