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CVE PROGRAM SOURCE RECORDUnscored

CVE-2022-50299

md: Replace snprintf with scnprintf

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: md: Replace snprintf with scnprintf Current code produces a warning as shown below when total characters in the constituent block device names plus the slashes exceeds 200. snprintf() returns the number of characters generated from the given input, which could cause the expression “200 – len” to wrap around to a large positive number. Fix this by using scnprintf() instead, which returns the actual number of characters written into the buffer. [ 1513.267938] ------------[ cut here ]------------ [ 1513.267943] WARNING: CPU: 15 PID: 37247 at <snip>/lib/vsprintf.c:2509 vsnprintf+0x2c8/0x510 [ 1513.267944] Modules linked in: <snip> [ 1513.267969] CPU: 15 PID: 37247 Comm: mdadm Not tainted 5.4.0-1085-azure #90~18.04.1-Ubuntu [ 1513.267969] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.1 05/09/2022 [ 1513.267971] RIP: 0010:vsnprintf+0x2c8/0x510 <-snip-> [ 1513.267982] Call Trace: [ 1513.267986] snprintf+0x45/0x70 [ 1513.267990] ? disk_name+0x71/0xa0 [ 1513.267993] dump_zones+0x114/0x240 [raid0] [ 1513.267996] ? _cond_resched+0x19/0x40 [ 1513.267998] raid0_run+0x19e/0x270 [raid0] [ 1513.268000] md_run+0x5e0/0xc50 [ 1513.268003] ? security_capable+0x3f/0x60 [ 1513.268005] do_md_run+0x19/0x110 [ 1513.268006] md_ioctl+0x195e/0x1f90 [ 1513.268007] blkdev_ioctl+0x91f/0x9f0 [ 1513.268010] block_ioctl+0x3d/0x50 [ 1513.268012] do_vfs_ioctl+0xa9/0x640 [ 1513.268014] ? __fput+0x162/0x260 [ 1513.268016] ksys_ioctl+0x75/0x80 [ 1513.268017] __x64_sys_ioctl+0x1a/0x20 [ 1513.268019] do_syscall_64+0x5e/0x200 [ 1513.268021] entry_SYSCALL_64_after_hwframe+0x44/0xa9

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

  • 766038846e875740cf4c20dfc5d5b292ba47360a to < 3b0a2bd51f60418ecd67493586a2bb2174199de3affected
  • 766038846e875740cf4c20dfc5d5b292ba47360a to < 897b1450abe5a67c842a5d24173ce4449ccdfa94affected
  • 766038846e875740cf4c20dfc5d5b292ba47360a to < 97238b88583c27c9d3b4a0cedb45f816523f17c3affected
  • 766038846e875740cf4c20dfc5d5b292ba47360a to < 76694e9ce0b2238c0a5f3ba54f9361dd3770ec78affected
  • 766038846e875740cf4c20dfc5d5b292ba47360a to < 5d8259c9d1915a50c60c7d6e9e7fb9b7da64a175affected
  • 766038846e875740cf4c20dfc5d5b292ba47360a to < 41ca95033a0c47cd6dace1f0a36a6eb5ebe799e6affected
  • 766038846e875740cf4c20dfc5d5b292ba47360a to < f95825c4e51cf9a653b0ef947ac78401fc9d3a40affected
  • 766038846e875740cf4c20dfc5d5b292ba47360a to < 1727fd5015d8f93474148f94e34cda5aa6ad4a43affected

Linux Linux

Default version status: affected

  • 4.10affected
  • 0 to < 4.10unaffected
  • 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