Opened 3 years ago

Closed 3 years ago

#4886 closed enhancement (fixed)


Reported by: Bruce Dubbs Owned by: ken@…
Priority: high Milestone: 11.0
Component: Book Version: git
Severity: normal Keywords:


New point version.

Change History (9)

comment:1 by Bruce Dubbs, 3 years ago

Summary: linux-5.13.2linux-5.13.3

Now version 5.13.3.

comment:2 by thomas, 3 years ago

Summary: linux-5.13.3linux-5.13.4

Now 5.13.4

comment:3 by ken@…, 3 years ago

Priority: normalhigh

Among the many changes in this version (more than 350 since 5.3.13) is a fix for CVE-2021-33909 (local privilege escalation via OOB write).

The commit which fixed this is

Details, with link to proof of concept (crasher) - exploit to be published later - and name of Sequoia' at

Fixed in 5.13.4, 5.12.19, 5.10.52, 5.4.134.

comment:4 by ken@…, 3 years ago

Owner: changed from lfs-book to ken@…
Status: newassigned

comment:5 by ken@…, 3 years ago

Version in book updated in @c735ea47abeec2eec39dfe15d886d0b98cbc5f70 10.1-134

comment:6 by ken@…, 3 years ago

Security Advisory SA 10.1-078.

I have not yet updated the space and time measurements for the kernel in chapter 10, building, and waiting for comments on whether using parallel processing makes sense for other than the minimal (allnoconfig) build.

comment:7 by Bruce Dubbs, 3 years ago

We pretty much say in LFS Section 4.5 that all the SBU values listed are at -j1, but that could be made more explicit. In BLFS we do list parallelism levels when it is used, but I don't think we should do that in LFS.

In LFS, I see the following in excess of 2SBU:

autoconf-fin-sbu-tests "7.2"
binutils-fin-sbu "6.2 SBU"
bison-fin-sbu "6.4 SBU"
coreutils-fin-sbu "2.5 SBU"
e2fsprogs-fin-sbu "4.4 SBU on a spinning disk, 1.5 SBU on an SSD"
gcc-tmpp1-sbu "11 SBU"
gcc-tmpp2-sbu "11 SBU"
gcc-fin-sbu "95 SBU (with tests)"
gettext-fin-sbu "2.9 SBU"
glibc-tmp-sbu "4.2 SBU"
glibc-fin-sbu "19 SBU"
linux-knl-sbu "5.0 - 125.0 SBU (typically about 9 SBU)
perl-fin-sbu "10 SBU"
python-fin-sbu "2.8 SBU"
tcl-tmp-sbu "3.8 SBU"

Most of those are due to tests.

I am not in favor of changing the method of calculating SBUs in LFS.

comment:8 by ken@…, 3 years ago

Estimates for -j1 builds updated in @d13e8eff811d338626cbf41d0be4dd6d666b055f 10.1-136.

comment:9 by ken@…, 3 years ago

Resolution: fixed
Status: assignedclosed
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