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CVE PROGRAM SOURCE RECORD5.5 Medium

CVE-2022-50359

media: cx88: Fix a null-ptr-deref bug in buffer_prepare()

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: media: cx88: Fix a null-ptr-deref bug in buffer_prepare() When the driver calls cx88_risc_buffer() to prepare the buffer, the function call may fail, resulting in a empty buffer and null-ptr-deref later in buffer_queue(). The following log can reveal it: [ 41.822762] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN PTI [ 41.824488] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] [ 41.828027] RIP: 0010:buffer_queue+0xc2/0x500 [ 41.836311] Call Trace: [ 41.836945] __enqueue_in_driver+0x141/0x360 [ 41.837262] vb2_start_streaming+0x62/0x4a0 [ 41.838216] vb2_core_streamon+0x1da/0x2c0 [ 41.838516] __vb2_init_fileio+0x981/0xbc0 [ 41.839141] __vb2_perform_fileio+0xbf9/0x1120 [ 41.840072] vb2_fop_read+0x20e/0x400 [ 41.840346] v4l2_read+0x215/0x290 [ 41.840603] vfs_read+0x162/0x4c0 Fix this by checking the return value of cx88_risc_buffer() [hverkuil: fix coding style issues]

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

  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < c76d04d2079a4b7369ce9a0e859c0f3f2250bcc1affected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 10c99d1c46ea9cd940029e17bab11d021f315c21affected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 4befc7ffa18ef9a4b70d854465313a345a06862faffected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 9181af2dbf06e7f432e5dbe88d10b22343e851b9affected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < c2257c8a501537afab276c306cb717b7260276e1affected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 6f21976095c1e92454ab030976f95f40d652351baffected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 704838040f3bdb4aa07ff4f26505a666a3defcfeaffected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 644d5a87ab1863eb606526ea743021752a17e9cbaffected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 2b064d91440b33fba5b452f2d1b31f13ae911d71affected

Linux Linux

Default version status: affected

  • 2.6.12affected
  • 0 to < 2.6.12unaffected
  • 4.9.331 to ≤ 4.9.*unaffected
  • 4.14.296 to ≤ 4.14.*unaffected
  • 4.19.262 to ≤ 4.19.*unaffected
  • 5.4.220 to ≤ 5.4.*unaffected
  • 5.10.150 to ≤ 5.10.*unaffected
  • 5.15.75 to ≤ 5.15.*unaffected
  • 5.19.17 to ≤ 5.19.*unaffected
  • 6.0.3 to ≤ 6.0.*unaffected
  • 6.1 to ≤ *unaffected

References