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CVE-2026-52984

net/sched: netem: fix queue limit check to include reordered packets PUBLISHED

Description (CNA)

In the Linux kernel, the following vulnerability has been resolved: net/sched: netem: fix queue limit check to include reordered packets The queue limit check in netem_enqueue() uses q->t_len which only counts packets in the internal tfifo. Packets placed in sch->q by the reorder path (__qdisc_enqueue_head) are not counted, allowing the total queue occupancy to exceed sch->limit under reordering. Include sch->q.qlen in the limit check.

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected 216509dda290f6db92c816dd54b83c1df9da9e76 before 0f875d52db4c921da610e481b72f03cc82fdcb72; affected c2047b0e216c8edce227d7c42f99ac2877dad0e4 before ef9a41b3870fb90577da5b2de5bd140022d4021e; affected 10df49cfca73dfbbdb6c4150d859f7e8926ae427 before 74fcd8e127200a50ee22ba2b45c164722bdb9177; affected 3824c5fad18eeb7abe0c4fc966f29959552dca3e before 39a66e83ea41fe845631eeb8d326953de27d13f9; affected 356078a5c55ec8d2061fcc009fb8599f5b0527f9 before 54b5dbacd00dedffd5e2eed76de1c3839996b5e6; affected f8d4bc455047cf3903cd6f85f49978987dbb3027 before 8450462eaf91d5d2a9e863507b16d18e814baef3; affected f8d4bc455047cf3903cd6f85f49978987dbb3027 before 936a7dd87251f6f3e88983350833edf60fe6a80b; affected f8d4bc455047cf3903cd6f85f49978987dbb3027 before 4185701fcce6b426b6c3630b25330dddd9c47b0d; affected 83c6ab12f08dcc09d4c5ac86fdb89736b28f1d31; affected 5.10.232 before 5.10.258; affected 5.15.175 before 5.15.209; affected 6.1.121 before 6.1.175; affected 6.6.67 before 6.6.141; affected 6.12.6 before 6.12.91; affected 5.4.288 before 5.5
Linux / Linuxaffected 6.13; unaffected 0 before 6.13; unaffected 5.10.258 through 5.10.*; unaffected 5.15.209 through 5.15.*; unaffected 6.1.175 through 6.1.*; unaffected 6.6.141 through 6.6.*; unaffected 6.12.91 through 6.12.*; unaffected 6.18.33 through 6.18.*; unaffected 7.0.10 through 7.0.*; unaffected 7.1 through *

CWE

No CWE identifiers supplied.

References