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CVE PROGRAM SOURCE RECORD7.8 High

CVE-2020-36791

net_sched: keep alloc_hash updated after hash allocation

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: net_sched: keep alloc_hash updated after hash allocation In commit 599be01ee567 ("net_sched: fix an OOB access in cls_tcindex") I moved cp->hash calculation before the first tcindex_alloc_perfect_hash(), but cp->alloc_hash is left untouched. This difference could lead to another out of bound access. cp->alloc_hash should always be the size allocated, we should update it after this tcindex_alloc_perfect_hash().

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

  • 73c29d2f6f8ae731b1e09051b69ed3ba2319482b to < d6cdc5bb19b595486fb2e6661e5138d73a57f454affected
  • b974ac51f5834a729de252fc5c1c9de9efd79b45 to < c4453d2833671e3a9f6bd52f0f581056c3736386affected
  • 6cb448ee493c8a514c9afa0c346f3f5b3227de85 to < 9f8b6c44be178c2498a00b270872a6e30e7c8266affected
  • 478c4b2ffd44e5186c7e22ae7c38a86a5b9cfde5 to < 557d015ffb27b672e24e6ad141fd887783871dc2affected
  • dd8142a6fa5270783d415292ec8169f4ea2a5468 to < d23faf32e577922b6da20bf3740625c1105381bfaffected
  • 2c66ff8d08f81bcf8e8cb22e31e39c051b15336a to < bd3ee8fb6371b45c71c9345cc359b94da2ddefa9affected
  • 599be01ee567b61f4471ee8078870847d0a11e8e to < 0d1c3530e1bd38382edef72591b78e877e0edcd3affected

Linux Linux

Default version status: unaffected

  • 4.4.214 to < 4.4.218affected
  • 4.9.214 to < 4.9.218affected
  • 4.14.171 to < 4.14.175affected
  • 4.19.103 to < 4.19.114affected
  • 5.4.19 to < 5.4.29affected
  • 5.5.3 to < 5.5.14affected

References